Organizations
Largest first
By revenue on the last return. Organizations that file Form 990-N report no figures and come last.
| Organization | Return | Revenue |
|---|---|---|
| Massachusetts Society for the Prevention of Cruelty to AnimalsBoston | Form 990 | $152,387,415FY2025 |
| New England Aquarium CorporationBoston | Form 990 | $54,645,914FY2024 |
| International Fund for Animal Welfare IncYarmouth Port | Form 990 | $44,498,195FY2025 |
| Commonwealth Zoological CorporationBoston | Form 990 | $34,370,304FY2025 |
| Animal Rescue League of BostonDedham | Form 990 | $21,909,126FY2024 |
| Second Chance Animal Services IncEast Brookfield | Form 990 | $9,747,246FY2025 |
| Dakin Pioneer Valley Humane SocietyincSpringfield | Form 990 | $6,797,312FY2026 |
| New England Regional Fishery Management CouncilNewburyport | Form 990 | $5,321,864FY2024 |
| Nantucket Safe Harbor for Animals IncNantucket | Form 990 | $4,226,226FY2024 |
| New England Wildlife CenterSouth Weymouth | Form 990 | $3,199,452FY2025 |
| Berkshire Humane Society IncPittsfield | Form 990 | $3,179,977FY2025 |
| American Fondouk Maintenance Committee IncBoston | Form 990 | $2,877,454FY2025 |
| Four Paws International IncBoston | Form 990 | $2,773,832FY2025 |
| Foster Parrots LtdRockland | Form 990 | $2,590,183FY2025 |
| Baypath Humane Society of Hopkinton IncHopkinton | Form 990 | $2,437,713FY2025 |
| Buttonwood Park Zoological Society IncNew Bedford | Form 990 | $1,988,083FY2025 |
| Vested Interest in K9S IncEast Taunton | Form 990 | $1,825,857FY2024 |
| Buddy Dog Humane Society IncSudbury | Form 990 | $1,662,089FY2025 |
| Sweet Paws RescueGroveland | Form 990 | $1,654,073FY2025 |
| Animal Shelter IncSterling | Form 990 | $1,623,131FY2024 |
| Yankee Golden Retriever Rescue IncHudson | Form 990 | $1,456,837FY2025 |
| Gorilla Rehabilitation and Conservation Education Grace CentFalmouth | Form 990 | $1,446,755FY2025 |
| International Animal Rescue UsBerlin | Form 990 | $1,440,194FY2024 |
| Cape Ann Animal Aid Association IncGloucester | Form 990 | $1,421,101FY2025 |
| Harmony Fund IncHolden | Form 990 | $1,368,885FY2024 |
| Amboseli Trust for ElephantsNewburyport | Form 990 | $1,289,266FY2025 |
| Forest Park Zoological Society IncSpringfield | Form 990 | $1,264,747FY2024 |
| Merrimack River Feline Rescue Society IncSalisbury | Form 990 | $1,167,776FY2025 |
| Worcester Animal Rescue LeagueWorcester | Form 990 | $1,163,100FY2026 |
| Humane Society-LowellLowell | Form 990 | $1,162,870FY2025 |
| Ellen M Gifford Sheltering Home CorporationBrighton | Form 990 | $1,146,434FY2024 |
| New England Anti-Vivisection SocietyBoston | Form 990 | $988,635FY2025 |
| BirdscaribbeanNatick | Form 990 | $984,117FY2024 |
| Beneath the Waves IncCharlestown | Form 990 | $973,724FY2024 |
| Wellfleet Shellfish Promotion and Tasting IncWellfleet | Form 990 | $944,034FY2025 |
| Gunung Palung Orangutan Conservation Program IncLexington | Form 990 | $922,403FY2024 |
| Last Hope K9 RescueBoston | Form 990 | $888,023FY2024 |
| Wild Care IncEastham | Form 990 | $866,504FY2024 |
| Pet Partners IncFall River | Form 990 | $846,715FY2024 |
| World Federation for Animals IncJamaica Plain | Form 990 | $823,317FY2024 |
| Communities Living Among Wildlife Sustainably Conservancy IncWorcester | Form 990 | $808,919FY2024 |
| Newhouse Wildlife Rescue CorporationChelmsford | Form 990 | $799,806FY2025 |
| Humane Society & Shelter SouthcoastNorth Dartmouth | Form 990 | $789,530FY2025 |
| Save a Dog IncSudbury | Form 990 | $767,210FY2024 |
| Forever Paws Animal ShelterFall River | Form 990 | $766,550FY2024 |
| Shultzs Guest House Services IncDedham | Form 990 | $748,840FY2025 |
| Paw Safe Animal Rescue IncMedford | Form 990 | $744,034FY2025 |
| Standish Humane Society IncDuxbury | Form 990 | $646,899FY2024 |
| Earthwise Aware IncSomerville | Form 990 | $644,341FY2025 |
| Merwin Memorial Free Clinic for Animals IncAllston | Form 990 | $635,797FY2025 |
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