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| IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm | 5 | Philip Leung |
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| IRS990EZ/PrimaryExemptPurposeTxt | 0 | Heart Dog Harbor rescues homeless and at-risk dogs from shelters with a focus on animals at risk of euthanasia. The organization provides veterinary care behavioral assessment and training foster placement and adoption services to prepare dogs for successful placement in permanent homes. In addition Heart Dog Harbor promotes responsible pet ownership through education community outreach and support for adopters. |
| IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt | 0 | Heart Dog Harbor initiated its foster-based rescue program during the tax year placing one at-risk dog into a foster home and providing individualized care including veterinary support and behavioral stabilization to prepare the dog for adoption. In addition to direct animal care the organization focused on building the infrastructure required to scale the program including recruiting and onboarding foster volunteers developing foster policies and procedures establishing veterinary partnerships and creating systems for intake placement and adoption coordination. These foundational efforts position the organization to expand foster capacity and increase the number of dogs served in future years with the goal of reducing shelter overcrowding and improving outcomes for dogs with medical and behavioral needs. |
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| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 6533 |
| IRS990ScheduleA/SubstantialContributorsTotAmt | 0 | 50800 |
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| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
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| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/LoanFromOrganizationInd | 0 | X |
| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/LoanPurposeTxt | 0 | Startup operational expenses |
| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/OriginalPrincipalAmt | 0 | 5000 |
| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/PersonNm | 0 | Kathleen Alford |
| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/RelationshipWithOrgTxt | 0 | Key Employee - Executive Director |
| IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/WrittenAgreementInd | 0 | true |
| IRS990ScheduleL/TotalBalanceDueAmt | 0 | 5000 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | | Other Expenses:, Amount:| Veterinary Care - Solano Napa Pet Emergency, $290.00| Veterinary Care - Solano Napa Pet Emergency, $191.00| Veterinary Care - Solano Napa Pet Emergency, $510.00| Veterinary Care - Monticello Veterinary, $88.00| Veterinary Care - Monticello Veterinary, $119.00| Veterinary Care - Monticello Veterinary, $488.00| Veterinary Care - Mayfair Vet Care, $150.00| Veterinary Care - Mayfair Vet Care, $235.00| Fundraising and donor management software, $3899.00| Banking and administrative costs, $22.00| Veterinary Care In-Kind, $2024.00| Veterinary Care In-Kind, $824.00| Banking and administrative costs, $5.00| PayPal Fees totaled for 2025, $14.00| |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | | Liabilities Name:, BOY Amount:, EOY Amount:| Mortgages or other loans payable, 0, $5000| |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | | Explanation:| During the tax year Heart Dog Harbor focused on organizational development and program infrastructure including establishing foster program policies recruiting volunteers and building veterinary and community partnerships. Program activity included the placement and care of one dog in a foster home with expanded program capacity planned for future years. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Part I, line 16 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Part II, line 26 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Program Service Accomplishments (Part III),line 28 |
| ReturnHeader/BuildTS | 0 | 2025-03-06 01:10:19Z |
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| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | Kathleen Alford |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | Executive Director |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 4084993814 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2026-04-21 |
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| ReturnHeader/Filer/BusinessNameControlTxt | 0 | HEAR |
| ReturnHeader/Filer/EIN | 0 | 333414063 |
| ReturnHeader/Filer/ForeignPhoneNum | 0 | 4084993814 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | 5055 BUSINESS CENTER DR STE 108 223 |
| ReturnHeader/Filer/USAddress/CityNm | 0 | Fairfield |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | CA |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 945349607 |
| ReturnHeader/ReturnTs | 0 | 2026-04-20T20:36:42-04:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990EZ |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2025-01-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2025-12-31 |
| ReturnHeader/TaxYr | 0 | 2025 |
