Liabilities / Assets
8th percentile
Higher debt load relative to assets than 8% of similar nonprofits.
EIN 04-2907561 • 501(c)3 • South Weymouth, MA
Profile
Promotion of positive values, behaviors, and policies toward wildlife and the environment thru education, research and medical treatment, and rehab of wildlife.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
8th percentile
Higher debt load relative to assets than 8% of similar nonprofits.
Liabilities / Revenue
7th percentile
Higher debt load relative to revenue than 7% of similar nonprofits.
Net Margin
97th percentile
Higher net margin than 97% of similar nonprofits.
Top Officer Pay
35th percentile
Higher top officer pay than 35% of similar nonprofits.
Top officer pay equals 0.7% of source-year revenue.
Asset Growth
99th percentile
Faster asset growth than 99% of similar nonprofits.
Revenue Growth
99th percentile
Faster revenue growth than 99% of similar nonprofits.
Assets
Up$38,649,149
Up $27,682,819 (+252%) from 2023
Liabilities
Up$111,517
Up $27,044 (+32%) from 2023
Net Assets
Up$38,537,632
Up $27,655,775 (+254%) from 2023
Revenue
Up$30,843,812
Up $27,632,250 (+860%) from 2023
Expenses
Up$3,256,635
Up $217,759 (+7.2%) from 2023
Net Income
Up$27,587,177
Up $27,414,491 (+15875%) from 2023
Most recent year
2024 • Form 990Detailed filing. Detailed filing data is available for this year.
NONE
Promotion of positive values, behaviors, and policies toward wildlife and the environment thru education, research and medical treatment and rehab of wildlife.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Land, Buildings, and Equipment, Net | $5,664,132 | $31,717,480 | ▲ $26,053,348 |
| Savings and Temporary Cash Investments | $2,952,200 | $3,207,675 | ▲ $255,475 |
| Cash and Non-Interest-Bearing Accounts | $1,483,489 | $2,826,207 | ▲ $1,342,718 |
| Pledges and Grants Receivable | $785,868 | $810,857 | ▲ $24,989 |
| Accounts Receivable | $51,806 | $58,095 | ▲ $6,289 |
| Prepaid Expenses and Deferred Charges | $2,835 | $2,835 | → $0 |
| Total Assets | $10,966,330 | $38,649,149 | ▲ $27,682,819 |
| Other Assets Total | $26,000 | $26,000 | → $0 |
| Liabilities | |||
| Other Liabilities | $63,413 | $76,132 | ▲ $12,719 |
| Accounts Payable and Accrued Expenses | $21,060 | $35,385 | ▲ $14,325 |
| Total Liabilities | $84,473 | $111,517 | ▲ $27,044 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $8,505,830 | $34,975,871 | ▲ $26,470,041 |
| Net Assets With Donor Restrictions | $2,376,027 | $3,561,761 | ▲ $1,185,734 |
| Total Net Assets Fund Balance | $10,881,857 | $38,537,632 | ▲ $27,655,775 |
| Total Liabilities and Net Assets / Fund Balance | $10,966,330 | $38,649,149 | ▲ $27,682,819 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Land | $28,012,600 | - | $28,012,600 |
| Buildings | $3,599,021 | $2,516,438 | $6,115,459 |
| Equipment | $69,471 | $595,906 | $665,377 |
| Leasehold Improvements | $36,388 | $134,134 | $170,522 |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2024 | $1,666,027 | $1,030,000 | ▲ $130,734 | - | $2,826,761 |
| 2023 | $1,580,980 | $0 | ▲ $85,047 | - | $1,666,027 |
| 2022 | $500,000 | $1,250,000 | ▼ $169,020 | - | $1,580,980 |
| 2021 | $0 | $500,000 | - | - | $500,000 |
| Name | Title | Full / Part Time | Base | Total |
|---|---|---|---|---|
| Gregory Mertz | Director/cheif Veterinaria | FT | $205,626 | $205,626 |
| Katrina M Bergman | President | FT | $203,710 | $203,710 |
| Zachary Mertz | Director | FT | $166,984 | $166,984 |
| Priya Patel | Veternatian | FT | $114,474 | $114,474 |
| Kristen Walsh | Finance | FT | $101,204 | $101,204 |
| Name | Title |
|---|---|
| Susan Delahunt | Chairman of the Board |
| Teresa Hill | Vice President |
| Joseph Flaherty | Director |
| Keith Wells | Director |
| Michael Bellotti | Director |
| Thomas Shields | Director |
| Beverly Smith | Clerk |
| Peter Brown | Treasurer |
| Contribution Type | Contribution Count | Reported Amount | Valuation Method |
|---|---|---|---|
| Real Estate Other | 1 | $26,220,000 | Fair Market Value (FMV) |
| Other Non Cash Contri Table | 15 | $35,269 | Fair Market Value (FMV) |
| Total Noncash Contributions | 16 | $26,255,269 | - |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $2,283,642 |
| Other Expenses | $972,993 |
| Total Fundraising Expense | $373,556 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $678,083 | $267,583 | $256,181 | $1,201,847 |
| Current Officers, Directors, Trustees, and Key Employees | $791,998 | - | - | $791,998 |
| All Other Expenses | $225,892 | $36,284 | $34,181 | $296,357 |
| Depreciation Depletion | $166,315 | $15,118 | $7,560 | $188,993 |
| Payroll Taxes | $123,723 | $22,520 | $21,560 | $167,803 |
| Other Employee Benefits | $109,104 | $5,792 | $7,098 | $121,994 |
| Other Expenses | $59,610 | $10,851 | $10,388 | $80,849 |
| Travel | $4,738 | $862 | $826 | $6,426 |
| Total Functional Expenses | $2,486,716 | $396,363 | $373,556 | $3,256,635 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $3,508,891 |
| Expenses per Audited Statements | $3,256,635 |
| Total Expenses per Form 990 | $3,256,635 |
| Expenses Not Reported on Form 990 | $252,256 |
| Expenses Not Reported on Financial Statements | $0 |
| Line Item | Amount |
|---|---|
| Fundraising Direct Expenses | $0 |
| Fundraising Gross Income | $0 |
| Professional Fundraising Fees | $0 |
| Event | Gross Receipts | Gross Revenue | Direct Expenses | Net Income |
|---|---|---|---|---|
| Halloween Fundraiser | $38,110 | - | - | - |
| Other Fundraising Events | $3,396 | - | - | - |
| Total Events | $41,506 | - | - | - |
| Liability | Amount |
|---|---|
| Accrued Expenses | $76,132 |
“Zak mertz (chief executive director) is the son of gregory mertz (chief veterinarian/director).”
“The auditor prepares the form 990. The director of finance reviews the form 990 then sends the form 990 to the treasurer and ceo for their review and final signatures.”
“The organization monitors and enforces compliance with thier conflict of interest policy throughout the year.”
“Compensation of officers or key employees includes a review and approval by the board.”
“Governing documents are made available upon request.”
“Board of directors oversees the audit process.”
“Part x, line 2: uncertainty in income taxes - the organization adopted the new standards for accounting for uncertainty in income taxes (income, sales, use and payroll), which required the organization to report any uncertain tax positions and to adjust its financial statements for the impact thereof. The organization determined that it had no tax positions that did not meet the "more likely than not" threshold of being sustained by the applicable tax authority. The organization files tax and information returns in the united states federal and massachusetts jurisdictions. These returns are generally subject to examination by tax authorities for the last three years.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 21060 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 35385 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 51806 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 58095 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | PROMOTION OF POSITIVE VALUES, BEHAVIORS, AND POLICIES TOWARD WILDLIFE AND THE ENVIRONMENT THRU EDUCATION, RESEARCH AND MEDICAL TREATMENT AND REHAB OF WILDLIFE. |
| IRS990/AllOtherContributionsAmt | 0 | 30039406 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 34181 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 36284 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 225892 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 296357 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | KRISTIN WALSH FINANCE DIRECTOR |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 7816824878 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 500 COLUMBIAN STREET |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | WEYMOUTH |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 02190 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 1483489 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 2826207 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 791998 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 791998 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 1 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContriRptFundraisingEventAmt | 0 | 41506 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 30080912 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 172128 |
| IRS990/CYOtherExpensesAmt | 0 | 972993 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 590772 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 27587177 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 2283642 |
| IRS990/CYTotalExpensesAmt | 0 | 3256635 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 373556 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 30843812 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 1 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/FundraisingAmt | 0 | 7560 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 15118 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 166315 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 188993 |
| IRS990/Desc | 0 | ANIMAL CARE AND TEACHING HOSPITAL: ANNUAL TREATMENT OF 1,000-2,000 INJURED WILD ANIMALS TEACHING HOSPITAL PROVIDERS INTERNSHIPS TO APPROX. SIXTY UNDERGRADUATE AND HIGH SCHOOL STUDENTS PER YEAR. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 2376027 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 3561761 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 1 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 45 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 1451796 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 1 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | SUSAN DELAHUNT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | PETER BROWN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | TERESA HILL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | BEVERLY SMITH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | JOSEPH FLAHERTY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | KEITH WELLS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | KATRINA M BERGMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | GREGORY MERTZ |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | THOMAS SHIELDS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | ZACHARY MERTZ |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | MICHAEL BELLOTTI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | PRIYA PATEL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | KRISTEN WALSH |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 203710 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 205626 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 166984 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 114474 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 101204 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | CHAIRMAN OF THE BOARD |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | CLERK |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | DIRECTOR/CHEIF VETERINARIA |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | VETERNATIAN |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | FINANCE |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1983 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/FundraisingAmt | 0 | 41506 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 0 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 0 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 11 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossReceiptsAmt | 0 | 30843812 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 11 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 5 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 172128 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 172128 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 3246478 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 5664132 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 31717480 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 34963958 |
| IRS990/LegalDomicileStateCd | 0 | MA |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | PROMOTION OF POSITIVE VALUES, BEHAVIORS, AND POLICIES TOWARD WILDLIFE AND THE ENVIRONMENT THRU EDUCATION, RESEARCH AND MEDICAL TREATMENT, AND REHAB OF WILDLIFE. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 10881857 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 38537632 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 68598 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 8505830 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 34975871 |
| IRS990/NoncashContributionsAmt | 0 | 26255269 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 26000 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 26000 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 7098 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 5792 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 109104 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 121994 |
| IRS990/OtherExpensesGrp/Desc | 0 | UTILITIES |
| IRS990/OtherExpensesGrp/Desc | 1 | MEDICAL AND FOOD SUPPLI |
| IRS990/OtherExpensesGrp/Desc | 2 | PROFESSIONAL FEES & CON |
| IRS990/OtherExpensesGrp/Desc | 3 | REPAIRS & MAINTENANCE |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 24249 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 0 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 2 | 11513 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 3 | 10388 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 25327 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 0 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 12026 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 3 | 10851 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 139149 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 122035 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 66069 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 59610 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 188725 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 122035 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 89608 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 80849 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 63413 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 76132 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 256181 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 267583 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 678083 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 1201847 |
| IRS990/OtherWebsiteInd | 0 | X |
| IRS990/OwnWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 21560 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 22520 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 123723 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 167803 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 785868 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 810857 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 2835 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 2835 |
| IRS990/PrincipalOfficerNm | 0 | GREGORY MERTZ |
| IRS990/ProfessionalFundraisingInd | 0 | 1 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 900099 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 900099 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | THE ODD PET |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | EDUCATION & PROJECT FEES |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 472990 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 117782 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 472990 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 117782 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | PUBLIC EDUCATION AND INFORMATION: IN-CLASSROOM EDUCATIONAL PROGRAMS FOR APPROX. 15,000 GRADESCHOOLERS AND ON-SITE EDUCATION TO SEVERAL THOUSAND VISITERS AND VOLUNTEERS PER YEAR ALONG WITH ANSWERING APPROX. 15,000 TELEPHONE CALLS A YEAR CONCERNING PROBLEM WILDLIFE AND PUBLIC HEALTH. |
| IRS990/ProgSrvcAccomActy2Grp/ExpenseAmt | 0 | 546851 |
| IRS990/ProgSrvcAccomActy2Grp/RevenueAmt | 0 | 117782 |
| IRS990/ProgSrvcAccomActy3Grp/Desc | 0 | THE ODD PET VET: IN-HOUSE VETERINARIAN SERVICES FOR EXOTIC ANIMALS INCLUDING EDUCATION TO PUBLIC INTERNS AND VOLUNTEERS ABOUT PET CARE AND PUBLIC HEALTH |
| IRS990/ProgSrvcAccomActy3Grp/ExpenseAmt | 0 | 488069 |
| IRS990/ProgSrvcAccomActy3Grp/RevenueAmt | 0 | 472990 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 2450513 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | 162481 |
| IRS990/PYOtherExpensesAmt | 0 | 826870 |
| IRS990/PYOtherRevenueAmt | 0 | 78340 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 520228 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 172686 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 2212006 |
| IRS990/PYTotalExpensesAmt | 0 | 3038876 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 3211562 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 27587177 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 0 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 1 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 2952200 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 3207675 |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 0 | DESCRIPTION: DONATION OF LAND DATE: 09/13/24 AMOUNT: 26220000. |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 0 | SCHEDULE A, PART VI, LIST OF UNUSUAL GRANTS: |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 3784137 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 2414443 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 2104102 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 3181643 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 2092342 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 13576667 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 168100 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 107318 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 4772 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 188 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 809 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 281187 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearAmt | 0 | 41506 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 78340 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 34844 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 24805 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 20532 |
| IRS990ScheduleA/OtherIncome170Grp/TotalAmt | 0 | 200027 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0.96580 |
| IRS990ScheduleA/PublicSupportPY170Pct | 0 | 0.97170 |
| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 13576667 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind | 0 | X |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt | 0 | 3784137 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt | 0 | 2414443 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 2104102 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 3181643 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 2092342 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 13576667 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 14057881 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | 1 |
| IRS990ScheduleD/BoardDesignatedBalanceEOYPct | 0 | 0.00000 |
| IRS990ScheduleD/BuildingsGrp/BookValueAmt | 0 | 3599021 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 2516438 |
| IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 6115459 |
| IRS990ScheduleD/CYEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 1666027 |
| IRS990ScheduleD/CYEndwmtFundGrp/ContributionsAmt | 0 | 1030000 |
| IRS990ScheduleD/CYEndwmtFundGrp/EndYearBalanceAmt | 0 | 2826761 |
| IRS990ScheduleD/CYEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 130734 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 1580980 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/ContributionsAmt | 0 | 0 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 1666027 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 85047 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 500000 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/ContributionsAmt | 0 | 1250000 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 1580980 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | -169020 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 0 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/ContributionsAmt | 0 | 500000 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 500000 |
| IRS990ScheduleD/DonatedServicesAndUseFcltsAmt | 0 | 252256 |
| IRS990ScheduleD/DonatedServicesUseFcltsAmt | 0 | 252256 |
| IRS990ScheduleD/EndowmentsHeldRelatedOrgInd | 0 | 0 |
| IRS990ScheduleD/EndowmentsHeldUnrelatedOrgInd | 0 | 0 |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 69471 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 595906 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 665377 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 252256 |
| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 0 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 3256635 |
| IRS990ScheduleD/FootnoteTextInd | 0 | X |
| IRS990ScheduleD/LandGrp/BookValueAmt | 0 | 28012600 |
| IRS990ScheduleD/LandGrp/OtherCostOrOtherBasisAmt | 0 | 28012600 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/BookValueAmt | 0 | 36388 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/DepreciationAmt | 0 | 134134 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/OtherCostOrOtherBasisAmt | 0 | 170522 |
| IRS990ScheduleD/NetUnrealizedGainsInvstAmt | 0 | 68598 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 76132 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | ACCRUED EXPENSES |
| IRS990ScheduleD/PrmnntEndowmentBalanceEOYPct | 0 | 1.00000 |
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