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        <NamePerson>Thomas L Fisher</NamePerson>
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        <NamePerson>Bert A Getz Jr</NamePerson>
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        <NamePerson>Graham C Grady</NamePerson>
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        <NamePerson>Philip Lee Harris</NamePerson>
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        <NamePerson>Christine E Holden</NamePerson>
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        <NamePerson>Heidi A Huizenga</NamePerson>
        <Title>Trustee</Title>
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        <NamePerson>Jill Javors</NamePerson>
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        <NamePerson>Barbara Levy Kipper</NamePerson>
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        <NamePerson>Angelo C Kleronomos</NamePerson>
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        <NamePerson>Jack L Kubik</NamePerson>
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        <NamePerson>Mrs Barry L MacLean</NamePerson>
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        <NamePerson>Brett N McGinnis</NamePerson>
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        <NamePerson>Sherman F Reynolds</NamePerson>
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        <NamePerson>Mark G Sander</NamePerson>
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        <NamePerson>Nan Schaffer DVM</NamePerson>
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        <NamePerson>Howard B Simpson</NamePerson>
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        <ExclusionAmount>5817276</ExclusionAmount>
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      <OtherRevenueMisc>
        <Description>Parking</Description>
        <BusinessCode>900099</BusinessCode>
        <TotalRevenueColumn>2125185</TotalRevenueColumn>
        <ExclusionAmount>2125185</ExclusionAmount>
      </OtherRevenueMisc>
      <OtherRevenueMisc>
        <Description>Transportation Rentals</Description>
        <BusinessCode>900099</BusinessCode>
        <TotalRevenueColumn>297812</TotalRevenueColumn>
        <ExclusionAmount>297812</ExclusionAmount>
      </OtherRevenueMisc>
      <TotalOtherRevenue>2422997</TotalOtherRevenue>
      <TotalRevenue>
        <TotalRevenueColumn>78096089</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>21137939</RelatedOrExemptFunctionIncome>
        <UnrelatedBusinessRevenue>1365618</UnrelatedBusinessRevenue>
        <ExclusionAmount>10483902</ExclusionAmount>
      </TotalRevenue>
      <GrantsToDomesticOrgs>
        <Total>67360</Total>
        <ProgramServices>67360</ProgramServices>
      </GrantsToDomesticOrgs>
      <GrantsToDomesticIndividuals>
        <Total>7500</Total>
        <ProgramServices>7500</ProgramServices>
      </GrantsToDomesticIndividuals>
      <ForeignGrants>
        <Total>92213</Total>
        <ProgramServices>92213</ProgramServices>
      </ForeignGrants>
      <BenefitsToMembers>
        <Total>0</Total>
      </BenefitsToMembers>
      <CompCurrentOfficersDirectors>
        <Total>1839038</Total>
        <ProgramServices>598758</ProgramServices>
        <ManagementAndGeneral>440255</ManagementAndGeneral>
        <Fundraising>800025</Fundraising>
      </CompCurrentOfficersDirectors>
      <CompDisqualPersons>
        <Total>0</Total>
      </CompDisqualPersons>
      <OtherSalariesAndWages>
        <Total>28098804</Total>
        <ProgramServices>24853761</ProgramServices>
        <ManagementAndGeneral>2070855</ManagementAndGeneral>
        <Fundraising>1174188</Fundraising>
      </OtherSalariesAndWages>
      <PensionPlanContributions>
        <Total>549706</Total>
        <ProgramServices>489238</ProgramServices>
        <ManagementAndGeneral>38479</ManagementAndGeneral>
        <Fundraising>21989</Fundraising>
      </PensionPlanContributions>
      <OtherEmployeeBenefits>
        <Total>4168548</Total>
        <ProgramServices>3456517</ProgramServices>
        <ManagementAndGeneral>502429</ManagementAndGeneral>
        <Fundraising>209602</Fundraising>
      </OtherEmployeeBenefits>
      <PayrollTaxes>
        <Total>2468863</Total>
        <ProgramServices>2197288</ProgramServices>
        <ManagementAndGeneral>172820</ManagementAndGeneral>
        <Fundraising>98755</Fundraising>
      </PayrollTaxes>
      <FeesForServicesManagement>
        <Total>0</Total>
      </FeesForServicesManagement>
      <FeesForServicesLegal>
        <Total>942039</Total>
        <ManagementAndGeneral>940526</ManagementAndGeneral>
        <Fundraising>1513</Fundraising>
      </FeesForServicesLegal>
      <FeesForServicesAccounting>
        <Total>63550</Total>
        <ManagementAndGeneral>63550</ManagementAndGeneral>
      </FeesForServicesAccounting>
      <FeesForServicesLobbying>
        <Total>60594</Total>
        <ProgramServices>10594</ProgramServices>
        <ManagementAndGeneral>50000</ManagementAndGeneral>
      </FeesForServicesLobbying>
      <FeesForServicesProfFundraising>
        <Total>75000</Total>
        <Fundraising>75000</Fundraising>
      </FeesForServicesProfFundraising>
      <FeesForServicesInvstMgmntFees>
        <Total>141462</Total>
        <ManagementAndGeneral>141462</ManagementAndGeneral>
      </FeesForServicesInvstMgmntFees>
      <FeesForServicesOther>
        <Total>3695224</Total>
        <ProgramServices>3491505</ProgramServices>
        <ManagementAndGeneral>168463</ManagementAndGeneral>
        <Fundraising>35256</Fundraising>
      </FeesForServicesOther>
      <Advertising>
        <Total>1497868</Total>
        <ProgramServices>1497868</ProgramServices>
      </Advertising>
      <OfficeExpenses>
        <Total>5221470</Total>
        <ProgramServices>4801522</ProgramServices>
        <ManagementAndGeneral>211342</ManagementAndGeneral>
        <Fundraising>208606</Fundraising>
      </OfficeExpenses>
      <InformationTechnology>
        <Total>698838</Total>
        <ProgramServices>185996</ProgramServices>
        <ManagementAndGeneral>476440</ManagementAndGeneral>
        <Fundraising>36402</Fundraising>
      </InformationTechnology>
      <Royalties>
        <Total>26073</Total>
        <ProgramServices>26073</ProgramServices>
      </Royalties>
      <Occupancy>
        <Total>3103369</Total>
        <ProgramServices>2794024</ProgramServices>
        <ManagementAndGeneral>280835</ManagementAndGeneral>
        <Fundraising>28510</Fundraising>
      </Occupancy>
      <Travel>
        <Total>347449</Total>
        <ProgramServices>299919</ProgramServices>
        <ManagementAndGeneral>9946</ManagementAndGeneral>
        <Fundraising>37584</Fundraising>
      </Travel>
      <TravelEntrtnmntPublicOfficials>
        <Total>0</Total>
      </TravelEntrtnmntPublicOfficials>
      <ConferencesMeetings>
        <Total>351508</Total>
        <ProgramServices>232294</ProgramServices>
        <ManagementAndGeneral>42277</ManagementAndGeneral>
        <Fundraising>76937</Fundraising>
      </ConferencesMeetings>
      <Interest>
        <Total>1029017</Total>
        <ProgramServices>1029017</ProgramServices>
      </Interest>
      <PaymentsToAffiliates>
        <Total>0</Total>
      </PaymentsToAffiliates>
      <DepreciationDepletion>
        <Total>6922704</Total>
        <ProgramServices>6922704</ProgramServices>
      </DepreciationDepletion>
      <Insurance>
        <Total>393000</Total>
        <ProgramServices>60269</ProgramServices>
        <ManagementAndGeneral>332731</ManagementAndGeneral>
      </Insurance>
      <OtherExpenses>
        <Description>Change in Market Valuation of Swap Agreements</Description>
        <Total>706345</Total>
        <ProgramServices>706345</ProgramServices>
      </OtherExpenses>
      <OtherExpenses>
        <Description>Loss on Retirement of Fixed Assets</Description>
        <Total>352432</Total>
        <ProgramServices>352432</ProgramServices>
      </OtherExpenses>
      <OtherExpenses>
        <Description>Revenue Bond Maintenance Fees</Description>
        <Total>234645</Total>
        <ProgramServices>234645</ProgramServices>
      </OtherExpenses>
      <AllOtherExpenses>
        <Total>322757</Total>
        <ProgramServices>260553</ProgramServices>
        <ManagementAndGeneral>49868</ManagementAndGeneral>
        <Fundraising>12336</Fundraising>
      </AllOtherExpenses>
      <TotalFunctionalExpenses>
        <Total>63477376</Total>
        <ProgramServices>54668395</ProgramServices>
        <ManagementAndGeneral>5992278</ManagementAndGeneral>
        <Fundraising>2816703</Fundraising>
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      <CashNonInterestBearing>
        <BOY>182905</BOY>
        <EOY>570210</EOY>
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      <SavingsAndTempCashInvestments>
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      <InventoriesForSaleOrUse>
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        <EOY>912812</EOY>
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        <EOY>352791</EOY>
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      <LandBuildingsEquipmentBasis>221834557</LandBuildingsEquipmentBasis>
      <LandBldgEquipmentAccumDeprec>89998830</LandBldgEquipmentAccumDeprec>
      <LandBuildingsEquipmentBasisNet>
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        <EOY>131835727</EOY>
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        <EOY>33133000</EOY>
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      <OtherAssetsTotal>
        <BOY>461669</BOY>
        <EOY>440541</EOY>
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      <TotalAssets>
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        <EOY>47245000</EOY>
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        <EOY>60831</EOY>
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        <BOY>8053242</BOY>
        <EOY>9720451</EOY>
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      <TotalLiabilities>
        <BOY>66644924</BOY>
        <EOY>68476877</EOY>
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      <FollowSFAS117>X</FollowSFAS117>
      <UnrestrictedNetAssets>
        <BOY>118363505</BOY>
        <EOY>119179603</EOY>
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      <TemporarilyRestrictedNetAssets>
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        <EOY>29248467</EOY>
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      <PermanentlyRestrictedNetAssets>
        <BOY>6979586</BOY>
        <EOY>7303485</EOY>
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      <TotalNetAssetsFundBalances>
        <BOY>141624520</BOY>
        <EOY>155731555</EOY>
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      <TotalLiabNetAssetsFundBalances>
        <BOY>208269444</BOY>
        <EOY>224208432</EOY>
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      <ReconcilationRevenueExpenses>14618713</ReconcilationRevenueExpenses>
      <ReconcilationOtherChanges>-511678</ReconcilationOtherChanges>
      <InfoInScheduleOPartXII>X</InfoInScheduleOPartXII>
      <MethodOfAccountingAccrual>X</MethodOfAccountingAccrual>
      <AccountantCompileOrReview>false</AccountantCompileOrReview>
      <FSAudited>true</FSAudited>
      <AuditCommittee>true</AuditCommittee>
      <FinancialStatementSeparate>X</FinancialStatementSeparate>
      <FederalGrantAuditRequired>false</FederalGrantAuditRequired>
      <FederalGrantAuditPerformed>true</FederalGrantAuditPerformed>
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        <CurrentTaxYearMinus3Years>25842204</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>19205470</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>13524906</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>13884261</CurrentTaxYear>
        <Total>81136743</Total>
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      <TaxRevLeviedForOrgBenefit170>
        <CurrentTaxYearMinus4Years>21726385</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>27351867</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>17071581</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>17661814</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>15624369</CurrentTaxYear>
        <Total>99436016</Total>
      </TaxRevLeviedForOrgBenefit170>
      <Total170>
        <CurrentTaxYearMinus4Years>30406287</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>53194071</CurrentTaxYearMinus3Years>
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        <CurrentTaxYearMinus1Year>31186720</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>29508630</CurrentTaxYear>
        <Total>180572759</Total>
      </Total170>
      <AmountsSubstContributorsTotal>6386136</AmountsSubstContributorsTotal>
      <PublicSupportTotal170>174186623</PublicSupportTotal170>
      <GrossInvestmentIncome170>
        <CurrentTaxYearMinus4Years>736545</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>633182</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>1148318</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>498907</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>602399</CurrentTaxYear>
        <Total>3619351</Total>
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        <CurrentTaxYearMinus1Year>20727</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>24317</CurrentTaxYear>
        <Total>84338</Total>
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      <TotalSupport>184276448</TotalSupport>
      <GrossReceiptsFromAdmissionsEtc>163152699</GrossReceiptsFromAdmissionsEtc>
      <PublicSupportPertcentage170>0.94520</PublicSupportPertcentage170>
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        <ContributorNameBusiness>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorNameBusiness>
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          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorAddressUS>
        <AggregateContributions>RESTRICTED</AggregateContributions>
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    </IRS990ScheduleB>
    <IRS990ScheduleC documentId="990C" softwareId="10000149" softwareVersion="2010.2.15">
      <Volunteers>true</Volunteers>
      <PaidStaffOrManagement>true</PaidStaffOrManagement>
      <MediaAdvertisements>false</MediaAdvertisements>
      <MailingsMembers>true</MailingsMembers>
      <MailingsMembersAmount>12857</MailingsMembersAmount>
      <PublicationsOrBroadcast>false</PublicationsOrBroadcast>
      <GrantsOtherOrganizations>false</GrantsOtherOrganizations>
      <DirectContactLegislators>true</DirectContactLegislators>
      <DirectContactLegislatorsAmount>131155</DirectContactLegislatorsAmount>
      <RalliesDemonstrations>false</RalliesDemonstrations>
      <OtherActivities>false</OtherActivities>
      <TotalLobbyingExpendituresIIB>144012</TotalLobbyingExpendituresIIB>
      <NotDescribedIn501c3>false</NotDescribedIn501c3>
      <Form990ScheduleCPartIV>
        <Identifier>II-B</Identifier>
        <ReturnReference>1A-J</ReturnReference>
        <Explanation>The Chicago Zoological Society is a private nonprofit organization that operates Brookfield Zoo on land owned by the Forest Preserve District of Cook County. Brookfield Zoo was created through an act of the Illinois Legislature and the Society annually receives partial funding from Cook County to maintain and operate the Zoo. Occasionally, the laws and regulations under which the Society was organized and is funded and operated require updating. The Society may</Explanation>
      </Form990ScheduleCPartIV>
      <Form990ScheduleCPartIV>
        <Identifier>II-B</Identifier>
        <ReturnReference>1A-J contd</ReturnReference>
        <Explanation>advise and assist appropriate legislative bodies in this activity. It may also advocate the adoption or rejection of legislation. By virtue of a management agreement with the District, the Society is periodically called upon to advise on matters of public policy. The Society also employs certain staff and consultants to communicate with the State of Illinois, federal officials, county commissioners and other government officials, to inform those parties of the activities of the Society.</Explanation>
      </Form990ScheduleCPartIV>
      <Form990ScheduleCPartIV>
        <Identifier>II-B</Identifier>
        <ReturnReference>1A-J contd</ReturnReference>
        <Explanation>Additionally, as required during the year, the Societys president and designated staff attend national and international professional group meetings and otherwise communicate with those groups on various pertinent matters, including the expression of opinions to appropriate congressional representatives, congressional committees or other deliberative bodies that influence public policy conerning species in danger of extinction, environmental managment, the</Explanation>
      </Form990ScheduleCPartIV>
      <Form990ScheduleCPartIV>
        <Identifier>II-B</Identifier>
        <ReturnReference>1A-J contd</ReturnReference>
        <Explanation>biological sciences and kindred subject, and federal regulatory agency activities affecting wildlife and its management. Also, as needed from time to time, the Society contacts its members, staff and volunteers to encourage them to express their views on pending legislation that may have a direct impact on the Society and its conservation programs.</Explanation>
      </Form990ScheduleCPartIV>
    </IRS990ScheduleC>
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      <NumberFundsHeld>2</NumberFundsHeld>
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      <AggregateFundValue>1753108</AggregateFundValue>
      <DisclosedOrgsLegalControl>false</DisclosedOrgsLegalControl>
      <DisclosedForCharitablePurposes>false</DisclosedForCharitablePurposes>
      <CollectUsedForPublicExhibition>X</CollectUsedForPublicExhibition>
      <CollectUsedForScholarResearch>X</CollectUsedForScholarResearch>
      <CollectUsedForPreservation>X</CollectUsedForPreservation>
      <CollectUsedForLoanOrExchPrgrms>X</CollectUsedForLoanOrExchPrgrms>
      <SolicitedAssetsForSale>true</SolicitedAssetsForSale>
      <AgentTrusteeEtc>false</AgentTrusteeEtc>
      <IncludedOnFS>true</IncludedOnFS>
      <CurrentYear>
        <BeginningOfYearBalance>14012000</BeginningOfYearBalance>
        <Contributions>412000</Contributions>
        <InvestmentEarningsOrLosses>2092000</InvestmentEarningsOrLosses>
        <OtherExpenditures>689000</OtherExpenditures>
        <AdministrativeExpenses>77000</AdministrativeExpenses>
        <EndOfYearBalance>15750000</EndOfYearBalance>
      </CurrentYear>
      <CurrentYearMinus1Year>
        <BeginningOfYearBalance>11708000</BeginningOfYearBalance>
        <Contributions>344000</Contributions>
        <InvestmentEarningsOrLosses>2586000</InvestmentEarningsOrLosses>
        <OtherExpenditures>521000</OtherExpenditures>
        <AdministrativeExpenses>105000</AdministrativeExpenses>
        <EndOfYearBalance>14012000</EndOfYearBalance>
      </CurrentYearMinus1Year>
      <CurrentYearMinus2Years>
        <BeginningOfYearBalance>16350000</BeginningOfYearBalance>
        <Contributions>672000</Contributions>
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        <AdministrativeExpenses>97000</AdministrativeExpenses>
        <EndOfYearBalance>11708000</EndOfYearBalance>
      </CurrentYearMinus2Years>
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      <EndowmentsHeldByUnrelatedOrgs>true</EndowmentsHeldByUnrelatedOrgs>
      <EndowmentsHeldByRelatedOrgs>false</EndowmentsHeldByRelatedOrgs>
      <LeaseholdImprovements>
        <OtherCostOrOtherBasis>215905753</OtherCostOrOtherBasis>
        <Depreciation>86364033</Depreciation>
        <BookValue>129541720</BookValue>
      </LeaseholdImprovements>
      <Equipment>
        <OtherCostOrOtherBasis>5163948</OtherCostOrOtherBasis>
        <Depreciation>3634797</Depreciation>
        <BookValue>1529151</BookValue>
      </Equipment>
      <OtherLandBuildings>
        <OtherCostOrOtherBasis>764856</OtherCostOrOtherBasis>
        <BookValue>764856</BookValue>
      </OtherLandBuildings>
      <TotalOfBookValueLandBuildings>131835727</TotalOfBookValueLandBuildings>
      <OtherLiabilities>
        <Description>Accrued Post Retirement Benefit Obligation</Description>
        <Amount>5200317</Amount>
      </OtherLiabilities>
      <OtherLiabilities>
        <Description>Accrued Sick Pay Benefit Obligation</Description>
        <Amount>1627366</Amount>
      </OtherLiabilities>
      <OtherLiabilities>
        <Description>Charitable Gift Annuity Obligation</Description>
        <Amount>428278</Amount>
      </OtherLiabilities>
      <OtherLiabilities>
        <Description>Market Value of Swap Agreements</Description>
        <Amount>2464490</Amount>
      </OtherLiabilities>
      <TotalOfAmounts>9720451</TotalOfAmounts>
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      <ExcessOrDeficitForYear>14618713</ExcessOrDeficitForYear>
      <NetUnrealizedGLOnInvestments>65326</NetUnrealizedGLOnInvestments>
      <OtherAmount>-577004</OtherAmount>
      <TotalAdjustments>-511678</TotalAdjustments>
      <ExcessOrDeficitPerFS>14107035</ExcessOrDeficitPerFS>
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      <NetUnrealizedGainsInvestments>65326</NetUnrealizedGainsInvestments>
      <RevenueNotRptdF990>65326</RevenueNotRptdF990>
      <RevenueSubtotal>81939605</RevenueSubtotal>
      <InvestmentExpensesNotIncluded>54198</InvestmentExpensesNotIncluded>
      <OtherRevenuesNotIncluded>-3897714</OtherRevenuesNotIncluded>
      <RevenueNotRptdOnFinStmt>-3843516</RevenueNotRptdOnFinStmt>
      <TotalRevenuePerForm990>78096089</TotalRevenuePerForm990>
      <TotExpensesEtcAuditedFinclStmt>67324641</TotExpensesEtcAuditedFinclStmt>
      <OtherExpensesIncluded>4208494</OtherExpensesIncluded>
      <ExpensesNotRptdF990>4208494</ExpensesNotRptdF990>
      <ExpensesSubtotal>63116147</ExpensesSubtotal>
      <InvestmentExpensesNotIncluded2>54198</InvestmentExpensesNotIncluded2>
      <OtherExpensesNotIncluded>307031</OtherExpensesNotIncluded>
      <ExpensesNotRptdOnFinStmt>361229</ExpensesNotRptdOnFinStmt>
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      <Form990ScheduleDPartXIV>
        <Identifier>I</Identifier>
        <ReturnReference>5 and 6</ReturnReference>
        <Explanation>The Society does not maintain any donor advised funds. Other Funds consist of the Chicago Board of Trade Endangered Species Fund and the CZS Womens Board Fund. Contributions to these funds come from donors as well as proceeds from fundraising events and investment income. Grants are decided by committees as described in Schedule I. At times, donors who have given money to the fund may also sit on the granting committee but no one donor may decide on the grant awards. All grants awarded</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>I</Identifier>
        <ReturnReference>5 and 6 contd</ReturnReference>
        <Explanation>must follow the guidelines and processes established by CZS. CZS Board of Trustees has final approval of all Chicago Board of Trade Endangered Species Committee recommended grant awards. CZS Management has final approval of all CZS Womens Board recommended grant awards.</Explanation>
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      <Form990ScheduleDPartXIV>
        <Identifier>III</Identifier>
        <ReturnReference>1A</ReturnReference>
        <Explanation>Animal Collections, which were acquired through breeding loans, purchases and contributions, are not recognized as assets on the Statement of Financial Position. Costs to acquire collection items are recorded as decreases in unrestricted net assets in the year in which the animals are acquired. Proceeds from deaccessions are reflected as increases in the appropriate net asset class. The Societys animal collection consists of specimens with numerous attributes including taxonomic group,</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>III</Identifier>
        <ReturnReference>1A contd</ReturnReference>
        <Explanation>age, sex, relationship and value to other animals, endangered status and breeding potential. The Society retains a record of every animal in a permanent file. An inventory of the collection is prepared annually. Professionally trained keeper staff and population managers provide daily care for the collection and determine population needs.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>III</Identifier>
        <ReturnReference>4</ReturnReference>
        <Explanation>The more than 2500 ambassadors of the animal kingdom which make up the CZS collection provide our visitors a rare opportunity to see species from around the globe. The collection, in connection with our education programs, provides CZS the opportunity to teach guests about animals and nature, conservation and other related topcis.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>IV</Identifier>
        <ReturnReference>2B</ReturnReference>
        <Explanation>The Society acts as fiscal agent for certain subgroups/committees of the AZA Species Survival Plan Groups, Taxon Advisory Groups, Strategic Action Groups or other similar organizations where the current chair of the group is a CZS staff member. These funds are tracked in a separate account on CZS books as an offsetting asset and liability. Funds expended from these accounts are subject to the same procurement policies as other CZS expenditures. When the Chair of the group changes or moves</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>IV</Identifier>
        <ReturnReference>2B Contd</ReturnReference>
        <Explanation>to another institution, the funds are transferred to that institution.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>V</Identifier>
        <ReturnReference>4</ReturnReference>
        <Explanation>The Societys endowment consists of 11different funds established to support a variety of CZS programs including conservation and research, education and outreach, care of the animal collection and grounds, and general operations. Additionally, the Society is the designated beneficiary of the interest income on a 1 million endowment established and maintained by the Chicago Community Trust. The CCT maintains variance power over this endowment and, accordingly, the Society has not included it</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>V</Identifier>
        <ReturnReference>4 Contd</ReturnReference>
        <Explanation>in its financial statements.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>VI</Identifier>
        <ReturnReference>1A-E</ReturnReference>
        <Explanation>The Society operates a zoological park on land owned by the Forest Preserve District of Cook County, IL which is provided to the Society at no charge. The land site of the Zoo, accordingly, is not recorded on the Societys financial statements. All park improvements acquired by the Society are legally owned by the District. All park improvements acquired by the Society, including those acquired with district funds, are recorded as park improvements on the Societys financial statements.</Explanation>
      </Form990ScheduleDPartXIV>
    </IRS990ScheduleD>
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      <GrantRecordsMaintained>true</GrantRecordsMaintained>
      <AcctsActvsOutUSTable>
        <Region>Central America and the Caribbean</Region>
        <TypeOfActivitiesConducted>program services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>conservation research field work</SpecificServicesProvided>
        <TotalExpenditures>11532</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>East Asia and the Pacific</Region>
        <TypeOfActivitiesConducted>grants to recipients in the region</TypeOfActivitiesConducted>
        <TotalExpenditures>4500</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>East Asia and the Pacific</Region>
        <TypeOfActivitiesConducted>program services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>attend conservation related conference</SpecificServicesProvided>
        <TotalExpenditures>3849</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>East Asia and the Pacific</Region>
        <TypeOfActivitiesConducted>program services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>conservation related fieldwork</SpecificServicesProvided>
        <TotalExpenditures>5052</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>Europe</Region>
        <TypeOfActivitiesConducted>grants to recipients in the region</TypeOfActivitiesConducted>
        <TotalExpenditures>33058</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>Europe</Region>
        <TypeOfActivitiesConducted>program services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>attend conservation related conference</SpecificServicesProvided>
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      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>Europe</Region>
        <TypeOfActivitiesConducted>program services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>conservation related fieldwork</SpecificServicesProvided>
        <TotalExpenditures>1120</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>Europe</Region>
        <TypeOfActivitiesConducted>program services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>membership in conservation organization</SpecificServicesProvided>
        <TotalExpenditures>10838</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>North America</Region>
        <TypeOfActivitiesConducted>fundraising</TypeOfActivitiesConducted>
        <TotalExpenditures>15589</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>North America</Region>
        <TypeOfActivitiesConducted>program services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>attend conservation related conference</SpecificServicesProvided>
        <TotalExpenditures>2995</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>South America</Region>
        <TypeOfActivitiesConducted>grants to recipients in the region</TypeOfActivitiesConducted>
        <TotalExpenditures>36055</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>South America</Region>
        <TypeOfActivitiesConducted>program services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>conservation related fieldwork</SpecificServicesProvided>
        <TotalExpenditures>49447</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>South Asia</Region>
        <TypeOfActivitiesConducted>grants to recipients in the region</TypeOfActivitiesConducted>
        <TotalExpenditures>3280</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>Sub-Saharan Africa</Region>
        <TypeOfActivitiesConducted>grants to recipients in the region</TypeOfActivitiesConducted>
        <TotalExpenditures>15320</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>Sub-Saharan Africa</Region>
        <TypeOfActivitiesConducted>program services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>conservation related fieldwork</SpecificServicesProvided>
        <TotalExpenditures>8427</TotalExpenditures>
      </AcctsActvsOutUSTable>
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      <TotalAmountSpent>210310</TotalAmountSpent>
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        <Region>Europe</Region>
        <PurposeOfGrant>conservation research fieldwork</PurposeOfGrant>
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        <MannerOfCashDisbursement>wire transfer</MannerOfCashDisbursement>
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      <GrantsToOrgsOutsideUS>
        <Region>South America</Region>
        <PurposeOfGrant>conservation research and conservation education fieldwork</PurposeOfGrant>
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        <Region>Europe</Region>
        <NumberOfRecipients>3</NumberOfRecipients>
        <AmountOfCashGrant>13058</AmountOfCashGrant>
        <MannerOfCashDisbursement>wire transfer</MannerOfCashDisbursement>
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      <GrantsToIndOutsideUS>
        <TypeOfAssistance>Conservation research fieldwork</TypeOfAssistance>
        <Region>East Asia and the Pacific</Region>
        <NumberOfRecipients>1</NumberOfRecipients>
        <AmountOfCashGrant>4500</AmountOfCashGrant>
        <MannerOfCashDisbursement>wire transfer</MannerOfCashDisbursement>
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      <GrantsToIndOutsideUS>
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        <Region>South America</Region>
        <NumberOfRecipients>3</NumberOfRecipients>
        <AmountOfCashGrant>15950</AmountOfCashGrant>
        <MannerOfCashDisbursement>wire transfer</MannerOfCashDisbursement>
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      <GrantsToIndOutsideUS>
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        <Region>South America</Region>
        <NumberOfRecipients>1</NumberOfRecipients>
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        <Explanation>The Society awards grants through its Chicago Board of Trade Endangered Species Fund CBT ESF. The grant cycle is 2 times per year. Grant proposals are reviewed by a team of approximately 20 reviewers. All proposals must be endorsed by an IUCN Species Survival Committee or other major, internationally known conservation organization, the AZA/WAZA, or other major zoo organization. For any individuals/organizations who are not US Citizens/entities, the Society checks the most recent OFAC Control</Explanation>
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        <ReturnReference>2 Contd</ReturnReference>
        <Explanation>List of Specifically Designated and Blocked Persons as well as the Consolidated List established and maintained by the 1267 Committee with respect to Al-Qaida, Usama bin Laden, and the Taliban and other individuals, groups, undertakings and entities associated with them. Approximately 50,000 is awarded each cycle, usually in amounts of 2,000 to 5,000 per grant. Final award recommendations are presented to the Executive Committee of the Board of Trustees by the CBT ESF Committee members.</Explanation>
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      <Form990ScheduleFPartV>
        <Identifier>I</Identifier>
        <ReturnReference>2 Contd</ReturnReference>
        <Explanation>Status reports are required from recipients 6 months after the receipt of the funds. Final reports are due 1 year after receipt of the funds along with a final accounting of the grant funds expended. In addition, other grant funds are given by the Society to major, internationally known conservation organizations in support of their general conservation mission. These contributions are determined annually by Society management and approved by the Board as part of the annual operating budget.</Explanation>
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      <Form990ScheduleFPartV>
        <Identifier>I</Identifier>
        <ReturnReference>3 col F</ReturnReference>
        <Explanation>, Part II line 1, and Part III All expenditures are reported using the accrual method of accounting.</Explanation>
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      <EmailSolicitations>X</EmailSolicitations>
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          <City>Chicago</City>
          <State>IL</State>
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          <State>IL</State>
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        </AddressUS>
        <Activity>Consulting-Whirl Gala</Activity>
        <FundraiserControlOfFunds>false</FundraiserControlOfFunds>
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      <LicensedStates>FL</LicensedStates>
      <LicensedStates>IL</LicensedStates>
      <LicensedStates>WI</LicensedStates>
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        <GrossRevenueEvent1>217150</GrossRevenueEvent1>
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        <FoodAndBeverageEvent1>74851</FoodAndBeverageEvent1>
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        <OtherDirectExpensesEvent1>327661</OtherDirectExpensesEvent1>
        <NameOfEvent2>Wines in the Wild</NameOfEvent2>
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        <EntertainmentEvent2>595</EntertainmentEvent2>
        <OtherDirectExpensesEvent2>87807</OtherDirectExpensesEvent2>
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        <OtherDirectExpensesTotalEvents>436781</OtherDirectExpensesTotalEvents>
        <DirectExpenseSummaryEvents>728037</DirectExpenseSummaryEvents>
        <NetIncomeSummary>-436575</NetIncomeSummary>
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        <GrossRevenueOtherGaming>69189</GrossRevenueOtherGaming>
        <NonCashPrizesOtherGaming>20462</NonCashPrizesOtherGaming>
        <OtherDirectExpensesOtherGaming>1602</OtherDirectExpensesOtherGaming>
        <VolunteerLaborOtherGaming>true</VolunteerLaborOtherGaming>
        <VolunteerLaborPrcntOtherGaming>0.88000</VolunteerLaborPrcntOtherGaming>
        <GrossRevenueTotalGaming>69189</GrossRevenueTotalGaming>
        <NonCashPrizesTotalGaming>20462</NonCashPrizesTotalGaming>
        <OtherDirectExpensesTotalGaming>1602</OtherDirectExpensesTotalGaming>
        <DirectExpenseSummaryGaming>22064</DirectExpenseSummaryGaming>
        <NetGamingIncomeSummary>47125</NetGamingIncomeSummary>
      </GamingInformation>
      <StatesWhereGamingConducted>IL</StatesWhereGamingConducted>
      <Licensed>true</Licensed>
      <LicenseSuspendedEtc>false</LicenseSuspendedEtc>
      <GamingWithNonmembers>true</GamingWithNonmembers>
      <MemberOfOtherEntity>false</MemberOfOtherEntity>
      <PercentageOfGamingOwnFacility>0.90000</PercentageOfGamingOwnFacility>
      <PercentageOfGamingOthrFacility>0.10000</PercentageOfGamingOthrFacility>
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      <AddressOfGamingRecKeeperUS>
        <AddressLine1>3300 Golf Road</AddressLine1>
        <City>Brookfield</City>
        <State>IL</State>
        <ZIPCode>60513</ZIPCode>
      </AddressOfGamingRecKeeperUS>
      <ContractWith3rdPartyForGamRev>false</ContractWith3rdPartyForGamRev>
      <GamingManagerNamePerson>S Breen-Bartecki VP Cons Funding</GamingManagerNamePerson>
      <GamingManagerCompensation>400</GamingManagerCompensation>
      <GamingManagerServicesProvided>As VP of CFI, Ms. Breen spend a small portion of her time supervising the raffle.</GamingManagerServicesProvided>
      <GamingManagerIsEmployee>X</GamingManagerIsEmployee>
      <CharitableDistribRequired>false</CharitableDistribRequired>
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        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>One Government Dr</AddressLine1>
          <City>St Louis</City>
          <State>MO</State>
          <ZIPCode>63110</ZIPCode>
        </AddressUS>
        <EINOfRecipient>430788060</EINOfRecipient>
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        <PurposeOfGrant>Conservation Research</PurposeOfGrant>
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      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>CBSG Global Conservation Network</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>12101 Johnny Cake Ridge Rd</AddressLine1>
          <City>Apple Valley</City>
          <State>MN</State>
          <ZIPCode>55124</ZIPCode>
        </AddressUS>
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      <RecipientTable>
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          <BusinessNameLine1>American Association of Zookeepers</BusinessNameLine1>
        </RecipientNameBusiness>
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          <AddressLine1>3601 SW 29th St</AddressLine1>
          <City>Topeka</City>
          <State>KS</State>
          <ZIPCode>66614</ZIPCode>
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        <EINOfRecipient>237274856</EINOfRecipient>
        <IRCSection>501C3</IRCSection>
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        <PurposeOfGrant>general operating support</PurposeOfGrant>
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      <RecipientTable>
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          <BusinessNameLine1>American Assoc of Zoological Parks and Acquariums</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>8403 Colesville Rd</AddressLine1>
          <City>Silver Springs</City>
          <State>MD</State>
          <ZIPCode>20910</ZIPCode>
        </AddressUS>
        <EINOfRecipient>550526930</EINOfRecipient>
        <IRCSection>501C3</IRCSection>
        <AmountOfCashGrant>6000</AmountOfCashGrant>
        <PurposeOfGrant>endowmt and gen op spt</PurposeOfGrant>
      </RecipientTable>
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      <Form990ScheduleIPartIII>
        <TypeOfGrant>Educ. Scholarship for Conservation Science Studies</TypeOfGrant>
        <NumberOfRecipients>3</NumberOfRecipients>
        <AmountOfCashGrant>7500</AmountOfCashGrant>
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        <Identifier>I</Identifier>
        <ReturnReference>2</ReturnReference>
        <Explanation>CZS awards grants and assistance through a variety of programs. For awards under the CBT ESF program, as well as general contributions to major conservation organizations, see details in Schedule F, part IV. CZS also provides grants and assistance through its educational scholarship programs and bus stipends programs. CZS maintains records to substantiate amounts, elegibility and selection criteria. Procedures are in place to monitor grants to ensure they are used for proper purposes including,</Explanation>
      </Form990ScheduleIPartIV>
      <Form990ScheduleIPartIV>
        <Identifier>I</Identifier>
        <ReturnReference>2 Contd</ReturnReference>
        <Explanation>where applicable, periodic reporting by the grantee.</Explanation>
      </Form990ScheduleIPartIV>
    </IRS990ScheduleI>
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      <HousingAllowanceOrResidence>X</HousingAllowanceOrResidence>
      <WrittenPolicyReTAndEExpenses>true</WrittenPolicyReTAndEExpenses>
      <SubstantiationRequired>true</SubstantiationRequired>
      <CompensationCommittee>X</CompensationCommittee>
      <IndependentConsultant>X</IndependentConsultant>
      <Form990OfOtherOrganizations>X</Form990OfOtherOrganizations>
      <CompensationSurvey>X</CompensationSurvey>
      <BoardOrCommitteeApproval>X</BoardOrCommitteeApproval>
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      <SupplementalNonqualRetirePlan>false</SupplementalNonqualRetirePlan>
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      <CompBasedNetEarningsRelateOrgs>false</CompBasedNetEarningsRelateOrgs>
      <AnyNonFixedPayments>false</AnyNonFixedPayments>
      <InitialContractException>false</InitialContractException>
      <Form990ScheduleJPartII>
        <NamePerson>Stuart D Strahl PhD</NamePerson>
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        <NamePerson>Kenneth S Kaduk</NamePerson>
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        <NamePerson>Dr Alejandro Grajal</NamePerson>
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        <NamePerson>Dr Dan Wharton</NamePerson>
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        <DeferredCompFilingOrg>4398</DeferredCompFilingOrg>
        <NontaxableBenefitsFilingOrg>6004</NontaxableBenefitsFilingOrg>
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      <Form990ScheduleJPartII>
        <NamePerson>Terrence Sykes</NamePerson>
        <BaseCompensationFilingOrg>147348</BaseCompensationFilingOrg>
        <OtherCompensationFilingOrg>288</OtherCompensationFilingOrg>
        <DeferredCompFilingOrg>626</DeferredCompFilingOrg>
        <NontaxableBenefitsFilingOrg>16768</NontaxableBenefitsFilingOrg>
        <TotalCompensationFilingOrg>165030</TotalCompensationFilingOrg>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>Thomas L Adams</NamePerson>
        <BaseCompensationFilingOrg>143630</BaseCompensationFilingOrg>
        <OtherCompensationFilingOrg>2345</OtherCompensationFilingOrg>
        <DeferredCompFilingOrg>4015</DeferredCompFilingOrg>
        <NontaxableBenefitsFilingOrg>968</NontaxableBenefitsFilingOrg>
        <TotalCompensationFilingOrg>150958</TotalCompensationFilingOrg>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartIII>
        <Identifier>I</Identifier>
        <ReturnReference>1A</ReturnReference>
        <Explanation>As provided for in the executive employment agreement approved by the Board of Trustees, the President received a housing allowance and a gross up payment equivalent to the tax obligation for the value of Society provided life insurance. Both were treated as taxable compensation to the President.</Explanation>
      </Form990ScheduleJPartIII>
    </IRS990ScheduleJ>
    <IRS990ScheduleK documentId="990K:1" softwareId="10000149" softwareVersion="2010.2.15">
      <Form990ScheduleKPartI>
        <IssuerName>
          <BusinessNameLine1>Village of Brookfield Cook County IL</BusinessNameLine1>
        </IssuerName>
        <IssuerEIN>366005807</IssuerEIN>
        <CUSIPNumber>112732AAD</CUSIPNumber>
        <DateIssued>2008-06-18</DateIssued>
        <IssuePrice>39850000</IssuePrice>
        <DescriptionOfPurpose>Construction and renovation of certain buildings and exhibits</DescriptionOfPurpose>
        <Defeased>false</Defeased>
        <OnBehalfOfIssuer>false</OnBehalfOfIssuer>
        <PoolFinancing>false</PoolFinancing>
      </Form990ScheduleKPartI>
      <Form990ScheduleKPartI>
        <IssuerName>
          <BusinessNameLine1>Village of Brookfield Cook County IL</BusinessNameLine1>
        </IssuerName>
        <IssuerEIN>366005807</IssuerEIN>
        <CUSIPNumber>00000NONE</CUSIPNumber>
        <DateIssued>2005-12-22</DateIssued>
        <IssuePrice>3530000</IssuePrice>
        <DescriptionOfPurpose>Refinance of remaining Series 1995A Bonds</DescriptionOfPurpose>
        <Defeased>false</Defeased>
        <OnBehalfOfIssuer>false</OnBehalfOfIssuer>
        <PoolFinancing>false</PoolFinancing>
      </Form990ScheduleKPartI>
      <Form990ScheduleKPartII>
        <TotalProceeds>39850000</TotalProceeds>
        <CapitalizedInterest>595445</CapitalizedInterest>
        <IssuanceCostsFromProceeds>296598</IssuanceCostsFromProceeds>
        <CapitalExpenditures>30508136</CapitalExpenditures>
        <AmountUnspent>9208730</AmountUnspent>
        <CurrentRefunding>false</CurrentRefunding>
        <AdvanceRefunding>false</AdvanceRefunding>
        <FinalAllocationMade>false</FinalAllocationMade>
        <AdequateBooksAndRecdsMaintaind>true</AdequateBooksAndRecdsMaintaind>
      </Form990ScheduleKPartII>
      <Form990ScheduleKPartIII>
        <OwningBondFinancedProperty>false</OwningBondFinancedProperty>
        <AnyLeaseArrangements>false</AnyLeaseArrangements>
        <MngmentCntrctBondFinancdPrprty>false</MngmentCntrctBondFinancdPrprty>
        <AnyResearchAgreements>false</AnyResearchAgreements>
        <BondCounselRoutinelyEngaged>false</BondCounselRoutinelyEngaged>
        <PercentageOfPrvtBusinessReUBI>0.00900</PercentageOfPrvtBusinessReUBI>
        <TotalPrivateBusinessUse>0.00900</TotalPrivateBusinessUse>
        <PostIssuanceComplianceProcdrs>true</PostIssuanceComplianceProcdrs>
      </Form990ScheduleKPartIII>
      <Form990ScheduleKPartIV>
        <Form8038TFiled>false</Form8038TFiled>
        <VariableRateIssue>true</VariableRateIssue>
        <HedgeIdentifiedInBooksAndRecds>true</HedgeIdentifiedInBooksAndRecds>
        <NameOfHedgeProvider>
          <BusinessNameLine1>The Northern Trust Co</BusinessNameLine1>
        </NameOfHedgeProvider>
        <TermOfHedge>0000000007.000000000000</TermOfHedge>
        <SuperintegratedHedge>false</SuperintegratedHedge>
        <HedgeTerminated>false</HedgeTerminated>
        <GrossProceedsInvestedInGIC>false</GrossProceedsInvestedInGIC>
        <GrossProceedsInvested>false</GrossProceedsInvested>
        <ExceptionToRebate>false</ExceptionToRebate>
      </Form990ScheduleKPartIV>
      <Form990ScheduleKPartIV>
        <Form8038TFiled>false</Form8038TFiled>
        <VariableRateIssue>true</VariableRateIssue>
        <HedgeIdentifiedInBooksAndRecds>true</HedgeIdentifiedInBooksAndRecds>
        <NameOfHedgeProvider>
          <BusinessNameLine1>The Northern Trust Co</BusinessNameLine1>
        </NameOfHedgeProvider>
        <TermOfHedge>0000000004.900000000000</TermOfHedge>
        <SuperintegratedHedge>false</SuperintegratedHedge>
        <HedgeTerminated>false</HedgeTerminated>
        <GrossProceedsInvestedInGIC>false</GrossProceedsInvestedInGIC>
        <GrossProceedsInvested>false</GrossProceedsInvested>
        <ExceptionToRebate>true</ExceptionToRebate>
      </Form990ScheduleKPartIV>
    </IRS990ScheduleK>
    <IRS990ScheduleL documentId="990L" softwareId="10000149" softwareVersion="2010.2.15">
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NameBusiness>
            <BusinessNameLine1>HDO Inc</BusinessNameLine1>
          </NameBusiness>
        </NameOfInterestedPerson>
        <Relationship>Trustee Bert A. Getz, Jr. serves as Director</Relationship>
        <AmountOfTransaction>111269</AmountOfTransaction>
        <DescriptionOfTransaction>Tent Rental</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
      </Form990ScheduleLPartIV>
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NameBusiness>
            <BusinessNameLine1>Freeborn &amp; Peters LLP</BusinessNameLine1>
          </NameBusiness>
        </NameOfInterestedPerson>
        <Relationship>Secretary of the Board Randall G. Vickery serves as a Managing Partner</Relationship>
        <AmountOfTransaction>488961</AmountOfTransaction>
        <DescriptionOfTransaction>Legal Services</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
      </Form990ScheduleLPartIV>
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NamePerson>Frank W Zeigler</NamePerson>
        </NameOfInterestedPerson>
        <Relationship>Family Member of Cindy Zeigler, key employee</Relationship>
        <AmountOfTransaction>135263</AmountOfTransaction>
        <DescriptionOfTransaction>employment</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
      </Form990ScheduleLPartIV>
      <Form990ScheduleLPartV>
        <Identifier>IV</Identifier>
        <ReturnReference>1</ReturnReference>
        <Explanation>During 2010, the Society used HDO, Inc. for tent rental services. Trustee Bert A. Getz, Jr. serves as a Director of HDO, Inc. This transaction followed the Societys established procurement policy and rates are competitive with market rates.</Explanation>
      </Form990ScheduleLPartV>
      <Form990ScheduleLPartV>
        <Identifier>IV</Identifier>
        <ReturnReference>2</ReturnReference>
        <Explanation>During 2010, the Society used Freeborn Peters LLP for legal services. Secretary of the Board Randall G. Vickery serves as a Managing Partner of Freeborn Peters. This transaction followed the Societys established procurement policy and rates are competitive with market rates.</Explanation>
      </Form990ScheduleLPartV>
      <Form990ScheduleLPartV>
        <Identifier>IV</Identifier>
        <ReturnReference>3</ReturnReference>
        <Explanation>During 2010, Frank W. Zeigler was employed by the Society as Sr. VP Collection and Animal Care. He is a family member of Cindy Zeigler, Sr. VP of Institutional Advancement. This transaction followed the Societys established recruiting, hiring and compensation policies.</Explanation>
      </Form990ScheduleLPartV>
    </IRS990ScheduleL>
    <IRS990ScheduleM documentId="990M" softwareId="10000149" softwareVersion="2010.2.15">
      <WorksOfArt>
        <NonCashCheckbox>X</NonCashCheckbox>
        <NumberOfContributions>3</NumberOfContributions>
        <NoncashContribsRptdF990>17900</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>cost or selling price</MethodOfDeterminingRevenues>
      </WorksOfArt>
      <BooksAndPublications>
        <NonCashCheckbox>X</NonCashCheckbox>
        <NoncashContribsRptdF990>10</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>cost or selling price</MethodOfDeterminingRevenues>
      </BooksAndPublications>
      <SecuritiesPubliclyTraded>
        <NonCashCheckbox>X</NonCashCheckbox>
        <NumberOfContributions>31</NumberOfContributions>
        <NoncashContribsRptdF990>192283</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>price of stock on gift date</MethodOfDeterminingRevenues>
      </SecuritiesPubliclyTraded>
      <DrugsAndMedicalSupplies>
        <NonCashCheckbox>X</NonCashCheckbox>
        <NumberOfContributions>1</NumberOfContributions>
        <NoncashContribsRptdF990>3300</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>cost or selling price</MethodOfDeterminingRevenues>
      </DrugsAndMedicalSupplies>
      <ScientificSpecimens>
        <NonCashCheckbox>X</NonCashCheckbox>
        <NumberOfContributions>85</NumberOfContributions>
      </ScientificSpecimens>
      <OtherNonCashContributionsTable>
        <NonCashCheckbox>X</NonCashCheckbox>
        <Description>Operating Supplies</Description>
        <NumberOfContributions>103</NumberOfContributions>
        <NoncashContribsRptdF990>276146</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>cost or selling price</MethodOfDeterminingRevenues>
      </OtherNonCashContributionsTable>
      <OtherNonCashContributionsTable>
        <NonCashCheckbox>X</NonCashCheckbox>
        <Description>charity fundraiser items</Description>
        <NumberOfContributions>9</NumberOfContributions>
        <NoncashContribsRptdF990>27840</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>cost or selling price</MethodOfDeterminingRevenues>
      </OtherNonCashContributionsTable>
      <OtherNonCashContributionsTable>
        <NonCashCheckbox>X</NonCashCheckbox>
        <Description>charity auction items</Description>
        <NumberOfContributions>115</NumberOfContributions>
        <NoncashContribsRptdF990>144597</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>cost or selling price</MethodOfDeterminingRevenues>
      </OtherNonCashContributionsTable>
      <OtherNonCashContributionsTable>
        <NonCashCheckbox>X</NonCashCheckbox>
        <Description>charity raffle items</Description>
        <NumberOfContributions>32</NumberOfContributions>
        <NoncashContribsRptdF990>7188</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>cost or selling price</MethodOfDeterminingRevenues>
      </OtherNonCashContributionsTable>
      <AnyPropertyThatMustBeHeld>false</AnyPropertyThatMustBeHeld>
      <ReviewProcessUnusualNCGifts>true</ReviewProcessUnusualNCGifts>
      <ThirdPartiesUsed>false</ThirdPartiesUsed>
      <Form990ScheduleMPartII>
        <Identifier>I</Identifier>
        <ReturnReference>33</ReturnReference>
        <Explanation>Securities - Current year contributions of stock which represent payments on pledges recorded as contribution revenue in a previous year are not included in the revenue shown on Form 990, Part VIII, Line 1g.</Explanation>
      </Form990ScheduleMPartII>
      <Form990ScheduleMPartII>
        <Identifier>I</Identifier>
        <ReturnReference>33</ReturnReference>
        <Explanation>Collection Items/Scientific Specimens - A zero amount was reported on Form 990, Part VIII, Line 1g because the Society does not capitalize its collection, as allowed under SFAS 116.</Explanation>
      </Form990ScheduleMPartII>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="990O" softwareId="10000149" softwareVersion="2010.2.15">
      <GeneralExplanation>
        <Identifier>Form 990 Part V</Identifier>
        <ReturnReference>1A</ReturnReference>
        <Explanation>The fiscal, general oversight, and policies of the Society are vested in a Board of not more than 58 Trustees. As of December 31, 2009, there were 51 voting Trustees. The elected officers of the Board, the chairs of the standing committees and such other Trustees as may be appointed by the Chairman constitute the Executive Committe. The Executive Committee has the power to transact all regular business of the Society during the period between the regular Board meetings.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990 Part VI</Identifier>
        <ReturnReference>2</ReturnReference>
        <Explanation>Corwith Hamill, Honorary Chairman of the Board of Trustees and Elizabeth Hamill Bramsen, Vice-Chairman of the Board - Family Relationship Larry DeMar, Trustee and Vicki DeMar, Trustee - Family Relationship</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990 Part VI</Identifier>
        <ReturnReference>6</ReturnReference>
        <Explanation>The membership of the Society is composed of up to 250 Governing Members. Up to 55 of the 58 Board of Trustees are elected by the Governing Members at their annual meeting. Governing Members are also eligible for appointment by the Societys Chairman to serve on Board committees other than the Executive Committee. Governing Members are chosen by the Nominating and Governance Committee of the Board of Trustees and voted on by the full Board of Trustees.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990 Part VI</Identifier>
        <ReturnReference>7A</ReturnReference>
        <Explanation>The membership of the Society is composed of up to 250 Governing Members. Up to 55 of the 58 Board of Trustees are elected by the Governing Members at their annual meeting. Governing Members are also eligible for appointment by the Societys Chairman to serve on Board committees other than the Executive Committee. Governing Members are chosen by the Nominating and Governance Committee of the Board of Trustees and voted on by the full Board of Trustees.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990 Part VI</Identifier>
        <ReturnReference>11A</ReturnReference>
        <Explanation>The IRS Form 990 is prepared by Societys management and reviewed and signed by the Societys tax advisor. The Form 990 is also reveiwed by the Audit Committee of the Board of Trustees. A copy of the final version of the form is also made available to the Board of Trustees prior to filing with the IRS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990 Part VI</Identifier>
        <ReturnReference>12C</ReturnReference>
        <Explanation>Annually, a conflict of interest form is sent out to all members of the Board of Trustees, Key employees and any employee with purchasing authority. The form covers potential conflicts through financial interests, use of Society services, privileged information and representation of Society interests. It also covers specific disclosures required by the IRS Form 990 and the Illinois AG990IL. Board of Trustee responses are reviewed by the Secretary of the Board and the Sr. VP of Finance and Admin. who together determine if a conflict exists. Employee responses are reviewed by the VP Human Resources and the Sr. VP Finance and Admin. Any conflicts are addressed to insure that all internal procedures are followed for any transactions with that individual and that all items requiring disclosure are properly noted. Any Board member with a conflict must abstain from voting on decisions involving the transaction in question. Any transactions entered into with interested persons follow the Societys established procurement policies and are provided at rates competitive with market rates.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990 Part VI</Identifier>
        <ReturnReference>14</ReturnReference>
        <Explanation>The Society has a record retention and destruction policy which it is currently in the process of updating and expanding.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990 Part VI</Identifier>
        <ReturnReference>15A and 15B</ReturnReference>
        <Explanation>The Societys policy for approval of compensation arrangements with officers and certain senior employees requires review and approval of the compensation arrangement by the Executive Committee of the Board, excluding anyone who is related to or under the control of the person involved in the arrangement. The Committee relies on appropriate comparability data which indicates the types and levels of similar compensation and benefit packages for similar positions provided by similar organizations. The Committee documents the basis for its determination of the reasonableness of compensation. This process is done annually for the President, Sr. VP of Finance and Admin and the Sr. VP of Institutional Advancement in any year where there is an increase in compensation.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990 Part VI</Identifier>
        <ReturnReference>19</ReturnReference>
        <Explanation>Governing documents are available through applicable governmental agencies the conflict of interest policy and financial statements are available upon written request to the Society.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990 Part XII</Identifier>
        <ReturnReference>3B</ReturnReference>
        <Explanation>Although the Society did not meet the federal expenditure threshold in 2010 to require an audit under OMB Circular A-133, the Society opted to undergo such an audit in order to maintain its low risk auditee status. The Society anticipates meeting the threshold to require an audit in 2011.</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
  </ReturnData>
</Return>