Data / Nonprofits / Massachusetts / Animal-related
Animal-related nonprofits in Massachusetts: 733 registered with the IRS
733 animal-related nonprofits are registered with the IRS in Massachusetts, 713 of them 501(c)(3) charities; the 329 that report revenue took in $429.7 million. The most are in Boston (22), Springfield (11), Worcester (10). The largest by revenue: Massachusetts Society for the Prevention of Cruelty To Animals ($152.4 million), New England Aquarium Corporation ($54.6 million), International Fund for Animal Welfare Inc ($44.5 million).
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The 500 largest by revenue
| Organization | City | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Massachusetts Society for the Prevention of Cruelty To Animals | Boston | 501(c)(3) | 1934 | $152.4 million | $293.5 million | 2025-12 |
| New England Aquarium Corporation | Boston | 501(c)(3) | 1960 | $54.6 million | $126.6 million | 2024-12 |
| International Fund for Animal Welfare Inc | Yarmouth Port | 501(c)(3) | 1998 | $44.5 million | $56.7 million | 2025-06 |
| Commonwealth Zoological Corporation | Boston | 501(c)(3) | 1992 | $34.4 million | $64.2 million | 2025-06 |
| Animal Rescue League of Boston | Dedham | 501(c)(3) | 1943 | $21.9 million | $141 million | 2024-12 |
| Second Chance Animal Services Inc | E Brookfield | 501(c)(3) | 1999 | $9.7 million | $7.9 million | 2025-12 |
| Dakin Pioneer Valley Humane Societyinc | Springfield | 501(c)(3) | 2007 | $6.8 million | $8.6 million | 2026-03 |
| New England Regional Fishery Management Council | Newburyport | 501(c)(3) | 1986 | $5.3 million | $1.3 million | 2024-12 |
| Nantucket Safe Harbor for Animals Inc | Nantucket | 501(c)(3) | 2012 | $4.2 million | $9 million | 2024-12 |
| New England Wildlife Center | S Weymouth | 501(c)(3) | 1984 | $3.2 million | $38.6 million | 2025-12 |
| Berkshire Humane Society Inc | Pittsfield | 501(c)(3) | 1992 | $3.2 million | $6.6 million | 2025-06 |
| American Fondouk Maintenance Committee Inc | Boston | 501(c)(3) | 1937 | $2.9 million | $23 million | 2025-12 |
| Four Paws International Inc | Boston | 501(c)(3) | 2012 | $2.8 million | $596,838 | 2025-12 |
| Foster Parrots LTD | Rockland | 501(c)(3) | 1999 | $2.6 million | $10.9 million | 2025-12 |
| Baypath Humane Society of Hopkinton Inc | Hopkinton | 501(c)(3) | 1977 | $2.4 million | $6.4 million | 2025-06 |
| Buttonwood Park Zoological Society Inc | New Bedford | 501(c)(3) | 1993 | $2 million | $2.5 million | 2025-12 |
| Vested Interest in K9S Inc | East Taunton | 501(c)(3) | 2010 | $1.8 million | $4.6 million | 2024-08 |
| Buddy Dog Humane Society Inc | Sudbury | 501(c)(3) | 1966 | $1.7 million | $12.6 million | 2025-06 |
| Sweet Paws Rescue | Groveland | 501(c)(3) | 2011 | $1.7 million | $3.7 million | 2025-12 |
| Animal Shelter Inc | Sterling | 501(c)(3) | 1994 | $1.6 million | $2 million | 2024-12 |
| Yankee Golden Retriever Rescue Inc | Hudson | 501(c)(3) | 1985 | $1.5 million | $6.1 million | 2025-06 |
| Gorilla Rehabilitation and Conservation Education Grace Cent | Falmouth | 501(c)(3) | 2014 | $1.4 million | $3.4 million | 2025-09 |
| International Animal Rescue Us | Berlin | 501(c)(3) | 2002 | $1.4 million | $492,041 | 2024-12 |
| Cape Ann Animal Aid Association Inc | Gloucester | 501(c)(3) | 1965 | $1.4 million | $8.1 million | 2025-06 |
| Harmony Fund Inc | Holden | 501(c)(3) | 2010 | $1.4 million | $56,422 | 2024-12 |
| Amboseli Trust for Elephants | Newburyport | 501(c)(3) | 2004 | $1.3 million | $1.9 million | 2025-12 |
| Forest Park Zoological Society Inc | Springfield | 501(c)(3) | 1967 | $1.3 million | $637,019 | 2024-12 |
| Merrimack River Feline Rescue Society Inc | Salisbury | 501(c)(3) | 1993 | $1.2 million | $6.8 million | 2025-05 |
| Worcester Animal Rescue League | Worcester | 501(c)(3) | 1930 | $1.2 million | $7.2 million | 2026-03 |
| Humane Society-Lowell | Lowell | 501(c)(3) | 1968 | $1.2 million | $735,740 | 2025-09 |
| Ellen M Gifford Sheltering Home Corporation | Brighton | 501(c)(3) | 1959 | $1.1 million | $4.6 million | 2024-12 |
| New England Anti-Vivisection Society | Boston | 501(c)(3) | 1944 | $988,635 | $5 million | 2025-12 |
| Birdscaribbean | Natick | 501(c)(3) | 2003 | $984,117 | $841,894 | 2024-12 |
| Beneath the Waves Inc | Charlestown | 501(c)(3) | 2014 | $973,724 | $644,409 | 2024-12 |
| Wellfleet Shellfish Promotion and Tasting Inc | Wellfleet | 501(c)(3) | 2003 | $944,034 | $1.4 million | 2025-12 |
| Gunung Palung Orangutan Conservation Program Inc | Lexington | 501(c)(3) | 2008 | $922,403 | $263,413 | 2024-12 |
| Last Hope K9 Rescue | Boston | 501(c)(3) | 2013 | $888,023 | $288,476 | 2024-12 |
| Wild Care Inc | Eastham | 501(c)(3) | 1994 | $866,504 | $1.8 million | 2024-12 |
| Pet Partners Inc | Fall River | 501(c)(3) | 2001 | $846,715 | $301,576 | 2024-12 |
| World Federation for Animals Inc | Jamaica Plain | 501(c)(3) | 1999 | $823,317 | $691,012 | 2024-12 |
| Communities Living Among Wildlife Sustainably Conservancy Inc | Worcester | 501(c)(3) | 2016 | $808,919 | $660,130 | 2024-12 |
| Newhouse Wildlife Rescue Corporation | Chelmsford | 501(c)(3) | 2021 | $799,806 | $941,809 | 2025-12 |
| Humane Society & Shelter Southcoast | N Dartmouth | 501(c)(3) | 1932 | $789,530 | $1.9 million | 2025-03 |
| Save A Dog Inc | Sudbury | 501(c)(3) | 2022 | $767,210 | $976,216 | 2024-12 |
| Forever Paws Animal Shelter | Fall River | 501(c)(3) | 1996 | $766,550 | $1.4 million | 2024-12 |
| Shultzs Guest House Services Inc | Dedham | 501(c)(3) | 2015 | $748,840 | $581,870 | 2025-06 |
| Paw Safe Animal Rescue Inc | Medford | 501(c)(3) | 1995 | $744,034 | $1.1 million | 2025-12 |
| Grey2k USA Worldwide Inc | Arlington | 501(c)(4) | 2001 | $738,672 | $1.4 million | 2024-12 |
| Standish Humane Society Inc | Duxbury | 501(c)(3) | 1970 | $646,899 | $2.4 million | 2024-12 |
| Earthwise Aware Inc | Somerville | 501(c)(3) | 2017 | $644,341 | $744,326 | 2025-12 |
| Merwin Memorial Free Clinic for Animals Inc | Allston | 501(c)(3) | 1980 | $635,797 | $6.1 million | 2025-12 |
| Thomas J Oconnor Animal Control Andadoption Center Foundation Inc | Springfield | 501(c)(3) | 2007 | $626,383 | $1.2 million | 2025-06 |
| Quincy Animal Shelter Inc | Quincy | 501(c)(3) | 2000 | $618,371 | $2.1 million | 2025-12 |
| Winslow Farm Animal Awareness Corp | Norton | 501(c)(3) | 2000 | $577,635 | $2 million | 2024-12 |
| Leatherback Project Inc | Norfolk | 501(c)(3) | 2019 | $569,871 | $189,783 | 2024-12 |
| Gal S Best Pal Incorporated | Saugus | 501(c)(3) | 2022 | $569,801 | $203,947 | 2024-12 |
| Animal Shelter of Martha S Vineyard Inc | Edgartown | 501(c)(3) | 2011 | $555,762 | $3.3 million | 2025-12 |
| Marthas Vineyard Shellfish Group Inc | Oak Bluffs | 501(c)(3) | 1977 | $549,725 | $904,987 | 2025-06 |
| House Rabbit Network Inc | Westford | 501(c)(3) | 2000 | $540,511 | $2 million | 2025-12 |
| African Aquatic Conservation Fund Inc | Chilmark | 501(c)(3) | 2016 | $534,989 | $309,931 | 2025-12 |
| Bethel Institute for Community Development | Jamaica Plain | 501(c)(3) | 2005 | $497,956 | $637,942 | 2023-12 |
| Paniscus Project | Cambridge | 501(c)(3) | 2021 | $494,006 | $413,979 | 2024-12 |
| Homefarm at Undermountain Inc | Lenox | 501(c)(3) | 2022 | $486,908 | $2.1 million | 2024-12 |
| Dog Aging Institute | Jamaica Plain | 501(c)(3) | 2024 | $482,062 | $343,720 | 2024-12 |
| Gloucester Fishermans Wives Development Programs Inc | Gloucester | 501(c)(3) | 1996 | $470,486 | $143,492 | 2024-12 |
| TCC Cat Rescue | Waltham | 501(c)(3) | 2000 | $452,094 | $133,010 | 2024-12 |
| French Bulldog Rescue Network A Nonprofit Corporation | Boston | 501(c)(3) | 2002 | $449,069 | $451,533 | 2024-12 |
| New England Equine Rescue - North | West Newbury | 501(c)(3) | 2012 | $438,616 | $1.3 million | 2025-12 |
| XII Northeast Fishery Sector Inc | Scituate | 501(c)(5) | 2012 | $426,683 | $203,384 | 2025-12 |
| Metro West Humane Society Inc | Framingham | 501(c)(3) | 1977 | $421,999 | $861,008 | 2024-12 |
| Pat Brody Shelter for Cats Inc | Lunenburg | 501(c)(3) | 1991 | $415,503 | $1.1 million | 2025-09 |
| Golden Opportunities for Independence | Walpole | 501(c)(3) | 2016 | $414,268 | $31,966 | 2024-12 |
| Sandy Paws Rescue Inc | Vineyard HVN | 501(c)(3) | 2018 | $391,127 | $19,099 | 2024-12 |
| GB Cod Fixed Gear Sector Inc | Chatham | 501(c)(5) | 2008 | $381,550 | $127,353 | 2024-12 |
| Salt Pond Areas Bird Sanctuaries Inc | W Falmouth | 501(c)(3) | 1966 | $377,160 | $6.9 million | 2024-12 |
| Carrie A Seaman Animal Shelter Inc | Provincetown | 501(c)(3) | 1995 | $376,429 | $1.1 million | 2025-06 |
| Kitty Angels Inc | Tyngsborough | 501(c)(3) | 1996 | $362,359 | $660,201 | 2025-12 |
| Project Comeback | Norfolk | 501(c)(3) | 2018 | $362,164 | $314,018 | 2025-12 |
| United Professional Horsemens Association Chapter 14 Inc | Halifax | 501(c)(3) | 2024 | $360,101 | $352,736 | 2024-12 |
| Medfield Animal Shelter Inc | Medfield | 501(c)(3) | 2000 | $354,865 | $1.2 million | 2024-12 |
| Lobster Foundation of Massachusetts Inc | Scituate | 501(c)(3) | 2012 | $353,864 | $74,361 | 2025-06 |
| Westfield Homeless Cat Project | Westfield | 501(c)(3) | 2006 | $350,652 | $157,467 | 2024-12 |
| Forever Home Rescue New England | Medfield | 501(c)(3) | 2008 | $349,755 | $134,869 | 2024-12 |
| Dog Orphans Inc | Douglas | 501(c)(3) | 1972 | $347,577 | $938,960 | 2025-09 |
| Milford Humane Society Inc | Milford | 501(c)(3) | 1992 | $333,021 | $981,941 | 2025-12 |
| New England Old English Sheepdog Rescue Inc | Lincoln | 501(c)(3) | 1995 | $331,686 | $2.1 million | 2024-12 |
| Kitty Connection Incorporated | Medford | 501(c)(3) | 2007 | $328,920 | $482,519 | 2025-12 |
| Mutt Rescue Inc | Chicopee | 501(c)(3) | 2016 | $325,030 | $0 | 2024-12 |
| Buddy & Friends Animal Rescue | Pembroke | 501(c)(3) | 2020 | $317,937 | $12,341 | 2025-12 |
| Broken Tail Rescue Inc | Millbury | 501(c)(3) | 2017 | $317,113 | $105,268 | 2024-12 |
| Brown Dog Coalition and Rescue Limited | Hopkinton | 501(c)(3) | 2015 | $314,176 | $94,130 | 2025-06 |
| Here Today Adopted Tomorrow Animal Sanctuary Inc | Brimfield | 501(c)(3) | 2012 | $313,379 | $288,922 | 2024-12 |
| Canines for Disabled Kids Inc | Worcester | 501(c)(3) | 1998 | $304,758 | $710,112 | 2025-08 |
| Lets Save the Strays International Inc | Wayland | 501(c)(3) | 2022 | $298,803 | $20,114 | 2025-12 |
| The Sampson Fund for Veterinary Care Inc | Orleans | 501(c)(3) | 1987 | $292,912 | $3 million | 2025-12 |
| Better Together Dog Rescue Inc | Leverett | 501(c)(3) | 2021 | $285,886 | $892,757 | 2024-12 |
| North American Wolf Foundation Inc | Ipswich | 501(c)(3) | 1992 | $275,979 | $228,749 | 2024-12 |
| Sowa Goat Sanctuary | Harvard | 501(c)(3) | 2021 | $261,949 | $158,837 | 2025-12 |
| Pawfect Life Rescue Inc | Uxbridge | 501(c)(3) | 2014 | $252,971 | $636,633 | 2025-12 |
| Friends of the Franklin County Regional Dog Shelter | Turners Falls | 501(c)(3) | 2015 | $252,955 | $1.1 million | 2025-03 |
| Animal Welfare Fund Inc | Salem | 501(c)(3) | 2007 | $248,783 | $84,054 | 2025-04 |
| Neady Cats Corp | West Boylston | 501(c)(3) | 2000 | $245,202 | $1.7 million | 2025-08 |
| Stray Pets in Need of Massachusetts Inc | Natick | 501(c)(3) | 1991 | $245,090 | $822,861 | 2024-12 |
| Hope Strengthens Foundation | Marblehead | 501(c)(3) | 2010 | $237,937 | $167,132 | 2025-12 |
| Community Cat Connection Inc | Webster | 501(c)(3) | 2006 | $237,624 | $676,851 | 2025-12 |
| Italian Greyhound Rescue Foundation Inc | North Reading | 501(c)(3) | 2004 | $236,898 | $639,581 | 2025-05 |
| Adopt A Stray Rescue Massachusetts | East Falmouth | 501(c)(3) | 2017 | $229,182 | $245,538 | 2025-12 |
| Greyhound Friends Inc | Hopkinton | 501(c)(3) | 1988 | $229,019 | $1.1 million | 2024-12 |
| Grey 2K USA Education Fund | Arlington | 501(c)(3) | 2001 | $225,149 | $88,215 | 2024-12 |
| Playa Animal Rescue | North Easton | 501(c)(3) | 2012 | $222,374 | $73,757 | 2025-12 |
| Milton Animal League Inc | Milton | 501(c)(3) | 1979 | $220,875 | $706,187 | 2025-12 |
| Love Is Life Veterinary Clinic | Franklin | 501(c)(3) | 2024 | $218,843 | $218,843 | 2024-12 |
| Diggity Dogs Service Dogs Inc | Greenfield | 501(c)(3) | 2018 | $217,457 | $59,831 | 2024-03 |
| Plymouth County Beekeepers Association Inc | Hanson | 501(c)(3) | 2013 | $214,419 | $66,218 | 2025-12 |
| Feral Advocates & Cat Trappers Inc | Weymouth | 501(c)(3) | 2014 | $212,139 | $477,751 | 2025-12 |
| New England Bassett Hound Rescue Inc | Rutland | 501(c)(3) | 2002 | $208,203 | $158,056 | 2024-12 |
| Nuttall Ornithological Club Inc | Pembroke | 501(c)(3) | 1942 | $208,186 | $2 million | 2025-09 |
| Smokey Chestnut Farm Inc | Norton | 501(c)(3) | 2012 | $207,430 | $37,645 | 2024-12 |
| German Shepherd Rescue of New England Inc | Wayland | 501(c)(3) | 1998 | $205,310 | $393,555 | 2025-12 |
| Urban Wildlife Rehabilitation Inc | Springfield | 501(c)(3) | 2004 | $204,042 | $170,314 | 2024-12 |
| Ahimsa Haven Animal Rescue Inc | Winchendon | 501(c)(3) | 2011 | $201,740 | $329,251 | 2024-12 |
| People for Cats | West Falmouth | 501(c)(3) | 1995 | $197,224 | $2.2 million | 2025-12 |
| Protection of Animals in Wakefield Society Inc | Wakefield | 501(c)(3) | 1985 | $196,612 | $358,865 | 2025-09 |
| Cat Rescue of Marlborough and Hudson | Hudson | 501(c)(3) | 2023 | $195,370 | $61,313 | 2025-12 |
| Angels Helping Animals Worldwide Inc | West Tisbury | 501(c)(3) | 2014 | $191,679 | $42,252 | 2024-12 |
| II Northeast Fishery Sector Inc | Gloucester | 501(c)(5) | 2012 | $186,288 | $793,167 | 2024-12 |
| Charles River Alleycats Incorporated | Cambridge | 501(c)(3) | 2004 | $184,424 | $93,499 | 2025-12 |
| Massachusetts Animal Coalition Inc | Natick | 501(c)(3) | 2001 | $183,493 | $95,583 | 2025-06 |
| Hull Seaside Animal Rescue Inc | Hull | 501(c)(3) | 2000 | $170,979 | $615,080 | 2025-12 |
| Eddie S Ranch Inc | Saugus | 501(c)(3) | 2024 | $169,562 | $157,900 | 2025-12 |
| Whip City Animal Sanctuary Inc | Westfield | 501(c)(3) | 2020 | $164,418 | $165,158 | 2024-12 |
| Second Chance Stables & Draft Rescue Inc | Savoy | 501(c)(3) | 2022 | $164,075 | $66,224 | 2025-12 |
| Happy Life Beagle Rescue Inc | Stoughton | 501(c)(3) | 2022 | $163,564 | $25,659 | 2025-12 |
| New England Federation of Humane Societies | Lowell | 501(c)(3) | 1992 | $162,261 | $55,094 | 2025-12 |
| Friends of Falmouth Dogs | Falmouth | 501(c)(3) | 1994 | $162,192 | $1.6 million | 2025-12 |
| Animal Assisted Therapy Services Ma | Millbury | 501(c)(3) | 2018 | $160,729 | $34,773 | 2026-06 |
| Care Southcoast Inc | Acushnet | 501(c)(3) | 2017 | $160,584 | $24,799 | 2024-12 |
| VIII Northeast Fishery Sector Inc | New Bedford | 501(c)(5) | 2012 | $159,176 | $235,831 | 2025-12 |
| XIII Northeast Fishery Sector Inc | Dartmouth | 501(c)(5) | 2012 | $159,009 | $358,681 | 2025-12 |
| Jacks Galore Inc | Washington | 501(c)(3) | 2013 | $157,340 | $388,577 | 2025-12 |
| Black Feather Rescue Inc | Plymouth | 501(c)(3) | 2007 | $156,547 | $195,319 | 2025-12 |
| Whippet Health Foundation Incorporated | Blandford | 501(c)(3) | 1999 | $154,235 | $779,843 | 2025-12 |
| No Paws Left Behind Inc | North Adams | 501(c)(3) | 2024 | $154,157 | $106,106 | 2024-12 |
| Luna Foundation Aruba Inc | Sandwich | 501(c)(3) | 2018 | $153,913 | $12,300 | 2025-12 |
| Kanes Krusade Inc | Springfield | 501(c)(3) | 2013 | $149,473 | $26,262 | 2024-12 |
| Berkshire Farm Sanctuary Inc | Peru | 501(c)(3) | 2021 | $148,260 | $560,416 | 2025-12 |
| Animal Rescue Front Inc | North Eastham | 501(c)(3) | 2007 | $145,483 | $165,325 | 2025-12 |
| Friends of Scituate Dog Park | Scituate | 501(c)(3) | 2017 | $142,800 | $213,432 | 2025-12 |
| Marine Mammal Alliance Nantucket Inc | Nantucket | 501(c)(3) | 2017 | $141,923 | $246,059 | 2025-12 |
| Paws4survival Rescue Inc | Marshfield | 501(c)(3) | 2025 | $141,823 | $6,823 | 2026-06 |
| Guardian Angels Cat Rescue Inc | Wayland | 501(c)(3) | 2008 | $138,755 | $208,174 | 2025-12 |
| BNRS Rock N Rescue A Nonprofit Corporation | North Reading | 501(c)(3) | 2017 | $137,056 | $54,553 | 2025-12 |
| Kitty Cat Cafe and Adoption Lounge Inc | Newburyport | 501(c)(3) | 2022 | $136,716 | $35,733 | 2025-12 |
| Mills River Rescue and Sanctuary | Marstons MLS | 501(c)(3) | 2019 | $135,299 | $78,006 | 2024-12 |
| Lighthouse Animal Shelter Inc | New Bedford | 501(c)(3) | 2014 | $132,061 | $67,960 | 2025-12 |
| Pug Rescue of New England Inc | Millis | 501(c)(3) | 2001 | $132,044 | $87,385 | 2025-12 |
| Turtle Rescue League Inc | Southbridge | 501(c)(3) | 2022 | $129,193 | $27,915 | 2025-12 |
| Program for Preserving the Natural World Inc | Boston | 501(c)(3) | 2014 | $128,500 | $130,971 | 2025-06 |
| Real Cruzan Cats | Lexington | 501(c)(3) | 2016 | $127,298 | $130,685 | 2025-12 |
| Furever Homes for Felines Inc | Belchertown | 501(c)(3) | 2018 | $124,879 | $7,213 | 2025-08 |
| Ruff Tales Rescue Corporation | Chelmsford | 501(c)(3) | 2015 | $124,406 | $66,850 | 2025-12 |
| Bostons Forgotten Felines Inc | Nantucket | 501(c)(3) | 2015 | $124,019 | $49,930 | 2025-12 |
| K9 PTSD Research Center | Seekonk | 501(c)(3) | 2025 | $123,262 | $28,455 | 2025-12 |
| Cattrap Inc | Nantucket | 501(c)(3) | 1995 | $120,463 | $280,692 | 2025-12 |
| Eastern English Springer Spaniel Club Inc | Milton | 501(c)(4) | 2009 | $120,339 | $30,843 | 2024-12 |
| Ipswich Humane Group Inc | Ipswich | 501(c)(3) | 1987 | $120,316 | $316,090 | 2025-09 |
| Helping Hands for the Plymouth Animal Shelter Inc | Manomet | 501(c)(3) | 2009 | $120,248 | $240,975 | 2024-12 |
| Quad Symposium | Malden | 501(c)(3) | 2013 | $119,015 | $44,240 | 2025-12 |
| Volunteer Humane Society Inc | Sterling | 501(c)(3) | 1975 | $118,561 | $328,081 | 2024-12 |
| Sacred Threads- A Center for Spirituality & Healing | Newton | 501(c)(3) | 2010 | $114,925 | $56,956 | 2025-12 |
| Rex the TV Terrier Inc | Whitinsville | 501(c)(3) | 2021 | $114,311 | $19,397 | 2024-12 |
| Capen Hill Nature Association Inc | Charlton City | 501(c)(3) | 2026 | $110,610 | $4,855 | 2025-12 |
| Cobble Hill Farm Education and Rescue Center | Williamstown | 501(c)(3) | 2023 | $109,578 | $2,562 | 2023-12 |
| Central New England Equine Rescue Inc | W Brookfield | 501(c)(3) | 2004 | $109,498 | $356,369 | 2025-12 |
| Friends of the Attleboro Animal Shelter Inc | Attleboro | 501(c)(3) | 2024 | $109,459 | $194,486 | 2023-12 |
| Black Cat Rescue Inc | Somerville | 501(c)(3) | 2022 | $107,059 | $1,232 | 2025-04 |
| South Shore Humane Society Inc | Weymouth | 501(c)(3) | 1975 | $105,925 | $339,938 | 2024-12 |
| Ellas Feline Rescue Mission | Springfield | 501(c)(3) | 2022 | $105,094 | $2,017 | 2025-12 |
| Second Chance Shelter for Cats Incorporated | Jamaica Plain | 501(c)(3) | 2002 | $105,087 | $58,806 | 2025-12 |
| Moby Kit Rescue Inc | Fall River | 501(c)(3) | 2021 | $102,066 | $45,348 | 2024-12 |
| Mansfield Shelter Friends Inc | Mansfield | 501(c)(3) | 1999 | $101,932 | $351,359 | 2025-12 |
| Its All About the Animals Inc | Rochester | 501(c)(3) | 2013 | $100,312 | $487,238 | 2025-12 |
| Mint for Mounts Inc | West Newbury | 501(c)(3) | 2010 | $100,000 | $39,875 | 2023-12 |
| Dont Forget Us Pet Us A Non Profit Corporation | Dartmouth | 501(c)(3) | 2010 | $99,530 | $7,971 | 2024-12 |
| Friends of Capron Park Zoo Inc | Attleboro | 501(c)(3) | 1984 | $99,396 | $259,766 | 2026-06 |
| Giant Sable Fund | Boston | 501(c)(3) | 2007 | $98,572 | $155,433 | 2025-12 |
| Animal Rescue of Merrimack Valley | Ward Hill | 501(c)(3) | 2006 | $95,210 | $40,528 | 2025-08 |
| New England Brittany Rescue Inc | Marion | 501(c)(3) | 2003 | $94,807 | $179,068 | 2025-12 |
| Massachusetts Veterinary Medical Association Charities Inc | Marlborough | 501(c)(3) | 1991 | $94,714 | $312,848 | 2025-12 |
| Marshfield Friends of Animal Shelte R Inc | Marshfield | 501(c)(3) | 2016 | $94,529 | $111,669 | 2025-06 |
| Never Alone Animal Rescue International Inc | Danvers | 501(c)(3) | 2022 | $93,075 | $1,944 | 2024-12 |
| Nerd Herd Sanctuary | Dartmouth | 501(c)(3) | 2023 | $92,000 | $1 | 2025-12 |
| Pals Animal Life Savers | Salem | 501(c)(3) | 2003 | $91,846 | $90,549 | 2024-12 |
| Chance of A Lifetime Dachshund Rescue Inc | Stoughton | 501(c)(3) | 2024 | $91,466 | $11,723 | 2024-12 |
| Melrose Humane Society | Melrose | 501(c)(3) | 1993 | $87,408 | $243,853 | 2025-08 |
| Cat Canton Rescue Inc | Norton | 501(c)(3) | 2014 | $86,661 | $15,606 | 2025-12 |
| Big Little Life Animal Rescue International Inc | Norwood | 501(c)(3) | 2021 | $85,872 | $53,997 | 2024-12 |
| Bosler Humane Society Inc | Baldwinville | 501(c)(3) | 1979 | $85,743 | $1.5 million | 2025-01 |
| Reptile Refuge & Sanctuary-Offering Animal Support Inspiring Survival | Beverly | 501(c)(3) | 2025 | $85,380 | $49,473 | 2022-12 |
| American Turtle Observatory | New Salem | 501(c)(3) | 2015 | $85,269 | $110,425 | 2024-12 |
| Little Patch of Heaven Sanctuary Inc | Fairhaven | 501(c)(3) | 2023 | $84,968 | $16,133 | 2024-12 |
| Project Samana Inc | Cohasset | 501(c)(3) | 2013 | $84,429 | $144,351 | 2025-12 |
| Furget Me Not Inc | Bryantville | 501(c)(3) | 2022 | $83,375 | $24,557 | 2025-12 |
| Barnstable County Beekeepers Association Inc | East Sandwich | 501(c)(3) | 2016 | $79,422 | $203,825 | 2024-12 |
| Tokas Friends | Westport | 501(c)(3) | 2017 | $79,172 | $97,735 | 2025-12 |
| Vivarium Operational Excellence Network Inc | Charlestown | 501(c)(6) | 2019 | $77,225 | $184,451 | 2025-12 |
| Big Wave Dog Rescue Inc | Billerica | 501(c)(3) | 2023 | $76,461 | $5,218 | 2025-01 |
| Friedenhof Animal Sanctuary Inc | Gloucester | 501(c)(3) | 2023 | $76,000 | $2,394 | 2025-12 |
| A Place for Ace Inc | Malden | 501(c)(3) | 2018 | $75,777 | $23,773 | 2026-01 |
| New England Primate Sanctuary Inc | Merrimac | 501(c)(3) | 2003 | $74,711 | $9,086 | 2025-12 |
| Fitchburg Friends of Felines Inc | Fitchburg | 501(c)(3) | 2015 | $74,615 | $15,148 | 2024-12 |
| Neponset Valley Humane Society Inc | Norwood | 501(c)(3) | 1993 | $74,211 | $36,897 | 2024-06 |
| Friends of the Plymouth Pound Inc | Manomet | 501(c)(3) | 1994 | $73,448 | $37,912 | 2025-12 |
| Pittilove Rescue Inc | Framingham | 501(c)(3) | 2006 | $71,227 | $82,630 | 2025-12 |
| Fishery Impact Fund | Charlestown | 501(c)(3) | 2024 | $71,000 | $9,735 | 2025-12 |
| Hearts 4 Paws Inc | New Bedford | 501(c)(3) | 2015 | $70,293 | $10,217 | 2024-12 |
| All Dog Rescue Inc | Natick | 501(c)(3) | 2003 | $68,995 | $393,642 | 2024-12 |
| Safe With Us Animal Rescue Inc | Upton | 501(c)(3) | 2017 | $68,025 | $19,329 | 2024-12 |
| Friends of Marbleheads Abandoned Animals Inc | Marblehead | 501(c)(3) | 2004 | $67,708 | $371,172 | 2024-12 |
| Berkshire Wildlife Services | Hinsdale | 501(c)(3) | 2013 | $67,439 | $31,885 | 2025-12 |
| Keep Fish Wet Inc | Amherst | 501(c)(3) | 2019 | $67,191 | $117,475 | 2024-12 |
| Clover Creek Sanctuary Inc | Seekonk | 501(c)(3) | 2022 | $67,120 | $3,027 | 2026-01 |
| Purr-Fect Cat Shelter | Medway | 501(c)(3) | 1995 | $65,787 | $497,399 | 2025-07 |
| New England Society for Abandoned Animals Inc | Osterville | 501(c)(3) | 2007 | $64,725 | $125,471 | 2024-12 |
| Mustard Seed Kitchen | Wellfleet | 501(c)(3) | 2008 | $64,324 | $114,188 | 2025-06 |
| Billerica Cat Care Coalition | N Billerica | 501(c)(3) | 2005 | $64,283 | $414,255 | 2026-04 |
| Greyhound Pets of America | Middleboro | 501(c)(3) | 1989 | $62,142 | $36,461 | 2025-12 |
| Bright Spot Therapy Dogs Inc | W Brookfield | 501(c)(3) | 2005 | $60,890 | $75,681 | 2025-12 |
| Greyhound Options Inc | Ware | 501(c)(3) | 2000 | $60,777 | $337,360 | 2024-12 |
| Salem Saves Animals | Salem | 501(c)(3) | 2016 | $60,776 | $10,391 | 2025-12 |
| Maple Brook Horse Sanctuary Inc | Spencer | 501(c)(3) | 2024 | $60,117 | $29,500 | 2025-12 |
| Friends of Beverly Animals Inc | Beverly | 501(c)(3) | 2008 | $58,423 | $151,035 | 2025-12 |
| Second Chance Animal Rescue Inc | Oak Bluffs | 501(c)(3) | 2007 | $58,148 | $9,849 | 2025-12 |
| Habitat for Cats No Kill Shelter | N Dartmouth | 501(c)(3) | 1998 | $57,119 | $93,771 | 2025-12 |
| Coastal Cat Rescue | Hingham | 501(c)(3) | 2024 | $56,922 | $34,530 | 2025-12 |
| A Helping Paw Inc | Buzzards Bay | 501(c)(3) | 2002 | $56,494 | $89,076 | 2024-12 |
| Animal Umbrella Inc | Peabody | 501(c)(3) | 1986 | $56,226 | $7,945 | 2024-12 |
| Massachusetts Humane Society Inc | Braintree | 501(c)(3) | 2006 | $56,143 | $356,254 | 2025-12 |
| Hilltop Humane Society Inc | S Weymouth | 501(c)(3) | 1997 | $53,702 | $314,689 | 2025-12 |
| From Alone To Home Rescue | Canton | 501(c)(3) | 2023 | $52,540 | $828 | 2025-12 |
| Waiting Animals Getting Support-A Nonprofit Corporation | North Dighton | 501(c)(3) | 2018 | $50,463 | $42,691 | 2025-12 |
| Sunny Meadow Sanctuary | Barre | 501(c)(3) | 2012 | $50,459 | $249,984 | 2025-12 |
| Cape Cod Police K-9 Relief Fund | South Dennis | 501(c)(3) | 2004 | $50,000 | $319,230 | 2025-12 |
| Crops and Flops Rescue Inc | Westminster | 501(c)(3) | 2023 | $49,757 | $14,771 | 2025-12 |
| Helping Animals Living Overseas Halo Inc | Cambridge | 501(c)(3) | 2013 | $48,729 | $20,961 | 2025-12 |
| Dogmothers Four the Paws Foundation Inc | Peabody | 501(c)(3) | 2024 | $48,600 | $2,878 | 2025-12 |
| Massachusetts Feline Intervention Alliance Inc | Attleboro | 501(c)(3) | 2017 | $48,226 | $58,661 | 2025-12 |
| Northeast Pyr Rescue | Lee | 501(c)(3) | 2006 | $47,187 | $121,102 | 2026-06 |
| Uberchic Ranch Inc | Wilmington | 501(c)(3) | 2022 | $44,184 | $254,125 | 2025-12 |
| Memory Lane Farm Rescue & Sanctuary | Harwich | 501(c)(3) | 2017 | $43,617 | $3,423 | 2024-12 |
| Beagles of New England States Inc | Wayland | 501(c)(3) | 2003 | $43,549 | $43,072 | 2025-12 |
| Save A Pet Society Inc | Seekonk | 501(c)(3) | 1995 | $41,939 | $220,285 | 2025-12 |
| Friends of the Boston Park Rangers Mounted Unit Inc | Boston | 501(c)(3) | 2012 | $41,169 | $449,972 | 2025-12 |
| Nine Lives of Norton Feline Rescue Shelter Inc | Norton | 501(c)(3) | 1998 | $40,559 | $320,070 | 2025-12 |
| Veterinary Association of the North Shore Inc | Middleton | 501(c)(3) | 1986 | $40,376 | $272,365 | 2025-12 |
| Pet Rock Fest Inc | Auburn | 501(c)(3) | 2008 | $39,229 | $10,227 | 2025-12 |
| New England Dog Training Club Inc | Sherborn | 501(c)(3) | 2010 | $39,087 | $53,471 | 2026-05 |
| Kyle S Legacy Inc | Braintree | 501(c)(3) | 2017 | $38,976 | $27,969 | 2024-12 |
| Animal Diplomacy | Cambridge | 501(c)(3) | 2018 | $37,887 | $26,415 | 2024-12 |
| In Honeys Memory Cat Shelter | Huntington | 501(c)(3) | 2013 | $37,761 | $17,010 | 2024-12 |
| Saving the Elephants Run Inc | S Dartmouth | 501(c)(3) | 2018 | $37,406 | $38,950 | 2024-12 |
| Paws 4 A Cure | Wakefield | 501(c)(3) | 2011 | $37,147 | $25,572 | 2025-12 |
| Sweetpea Friends of Rutland Animals | Paxton | 501(c)(3) | 2002 | $36,245 | $728,545 | 2025-06 |
| Little Bear Stables Inc | Lancaster | 501(c)(3) | 2021 | $35,986 | $5,805 | 2023-12 |
| Friends of the North Attleboro Animal Shelter | N Attleboro | 501(c)(3) | 2012 | $33,437 | $140,380 | 2025-12 |
| Hope Haven Pet Rescue Inc | Worcester | 501(c)(3) | 2022 | $33,358 | $863 | 2024-12 |
| Palmarito Sea Turtle Rescue Inc | East Falmouth | 501(c)(3) | 2016 | $32,457 | $90,481 | 2025-12 |
| GSP Rescue New England Inc | Tewksbury | 501(c)(3) | 2008 | $31,401 | $19,507 | 2024-12 |
| Barnstable Association for Recreational Shellfishing Inc | W Barnstable | 501(c)(3) | 2010 | $30,819 | $43,323 | 2025-12 |
| South Shore Pet Food Pantry Inc | Weymouth | 501(c)(3) | 2021 | $29,251 | $487 | 2025-12 |
| Hearts for Hooves Inc | Barre | 501(c)(3) | 2022 | $28,627 | $7,863 | 2024-12 |
| Rainbow Rescues | Westhampton | 501(c)(3) | 2015 | $28,255 | $81,809 | 2024-12 |
| Provincetown Dog Park Association | Provincetown | 501(c)(3) | 2008 | $27,517 | $379,755 | 2025-12 |
| Wags 2 Riches Dog Rescue Inc | Gloucester | 501(c)(3) | 2016 | $27,123 | $770 | 2025-12 |
| Survivor Tails Animal Rescue Inc | Rockland | 501(c)(3) | 2014 | $26,563 | $13,103 | 2025-01 |
| Jones River Landing Enviromental Heritage Center Inc | Kingston | 501(c)(3) | 2004 | $24,773 | $1.2 million | 2024-12 |
| Greyhound Rescue of New England Inc | Upton | 501(c)(3) | 1999 | $24,681 | $88,674 | 2025-12 |
| Big Pond Association Inc | Westfield | 501(c)(3) | 2006 | $24,572 | $213,717 | 2025-12 |
| Friends of the Springfield Vet Center | W Springfield | 501(c)(3) | 2014 | $24,563 | $54,351 | 2024-12 |
| Poodle Rescue of New England Inc | Framingham | 501(c)(3) | 2001 | $24,337 | $162,163 | 2025-12 |
| Old Colony Dog Training | Salem | 501(c)(3) | 2024 | $23,612 | $19,922 | 2025-12 |
| No Mutts Left Behind Inc | Cherry Valley | 501(c)(3) | 2020 | $23,159 | $8,432 | 2024-12 |
| Stripers Forever Inc | Newbury | 501(c)(3) | 2024 | $22,228 | $43,399 | 2025-12 |
| Shadow Fund Ne | Andover | 501(c)(3) | 2017 | $22,053 | $59,394 | 2026-05 |
| Animal Control Officers Association of Massachusetts Inc | New Bedford | 501(c)(3) | 2017 | $20,478 | $84,420 | 2025-06 |
| Hockamock Kennel Club Inc | Scituate | 501(c)(4) | 2008 | $20,286 | $11,668 | 2026-05 |
| Off the Rocks Animal Rescue Inc | Wellesley | 501(c)(3) | 2018 | $20,044 | $91,925 | 2025-12 |
| New England English Springer Spaniel Rescue Inc | Ashland | 501(c)(3) | 2002 | $18,610 | $196,642 | 2025-12 |
| Felix Neck Wildlife Trust Inc | Vineyard HVN | 501(c)(3) | 1965 | $17,741 | $387,917 | 2025-08 |
| Humane Coalition for Animals of Greater New Bedford | New Bedford | 501(c)(3) | 2001 | $17,569 | $61,152 | 2023-12 |
| Apache Way Farm Rescue Inc | Dighton | 501(c)(3) | 2015 | $17,249 | $104,808 | 2025-12 |
| Windows On Wildlife Inc | Littleton | 501(c)(3) | 2006 | $16,534 | $12,600 | 2024-12 |
| Fine Feline Cat Rescue | Uxbridge | 501(c)(3) | 2021 | $16,059 | $1,834 | 2025-12 |
| Cape Community Equestrian Association Inc | S Yarmouth | 501(c)(3) | 2015 | $15,474 | $237,316 | 2025-12 |
| Needham Police Working Dogs Foundation Inc | Needham | 501(c)(3) | 2023 | $15,395 | $2,465 | 2023-12 |
| Ginger Cat Project Incorporated | Holbrook | 501(c)(3) | 2024 | $15,070 | $6,746 | 2025-12 |
| Evas Kitties Inc | Newton Centre | 501(c)(3) | 2018 | $13,028 | $24,006 | 2026-06 |
| Equine International Corp | Boston | 501(c)(3) | 2022 | $12,403 | $12,067 | 2025-12 |
| Bristol County Beekeepers Association Inc | North Dighton | 501(c)(3) | 2016 | $12,387 | $27,040 | 2024-12 |
| Rusty Tank Corp | Salem | 501(c)(3) | 2016 | $12,239 | $4,834 | 2025-10 |
| Faces Inc | W Springfield | 501(c)(3) | 2023 | $11,737 | $227,939 | 2024-12 |
| House Rabbit Connection | Springfield | 501(c)(3) | 1997 | $11,525 | $19,112 | 2025-05 |
| Westie Rescue of New England Inc | New Bedford | 501(c)(3) | 2010 | $10,789 | $59,106 | 2025-12 |
| The Center for Rehabilitation of Wildlife Inc | Cummington | 501(c)(3) | 2005 | $8,815 | $246,970 | 2025-12 |
| Massachusetts Union for Siberian Huskies Inc | Malden | 501(c)(3) | 2009 | $8,361 | $17,189 | 2025-12 |
| Safe Tails Animal Rescue Corp | Merrimac | 501(c)(3) | 2017 | $8,088 | $168 | 2025-12 |
| All Cats All the Time Inc | Newton Centre | 501(c)(3) | 2022 | $7,771 | $21,341 | 2025-12 |
| All for the Animals Inc | Sagamore BCH | 501(c)(3) | 2006 | $7,759 | $4,570 | 2026-01 |
| Paws in Your Hands Rescue Inc | Sudbury | 501(c)(3) | 2022 | $7,645 | $2,260 | 2025-12 |
| Scientific and Medical Coalition Against Cancer | Hanover | 501(c)(3) | 2006 | $7,460 | $4,703 | 2025-12 |
| Northhampton Society for the Prevention of Cruelty To Animals I | Williamsburg | 501(c)(3) | 1987 | $6,657 | $680,433 | 2025-12 |
| South Coast Tropical Fish Society Inc | Dartmouth | 501(c)(3) | 2023 | $4,965 | $1,392 | 2023-12 |
| Friends of Charlton Police Dogs Inc | Charlton | 501(c)(3) | 2024 | $4,926 | $3,791 | 2025-12 |
| People for Animals Leauge Inc | Spencer | 501(c)(3) | 1997 | $4,923 | $65,264 | 2025-12 |
| Friends of Cape Wildlife Inc | Provincetown | 501(c)(3) | 2017 | $4,613 | $10,478 | 2025-12 |
| Toy Poodle Rescue | Dover | 501(c)(3) | 2008 | $4,234 | $13,523 | 2024-12 |
| Miltons Billion Backyard Bee Project Inc | Milton | 501(c)(3) | 2018 | $3,226 | $4,989 | 2024-12 |
| Dunrealtuff | Oxford | 501(c)(3) | 2023 | $3,182 | $846 | 2025-12 |
| Massachusetts Rescue and Recovery K9 Unit Inc | Harvard | 501(c)(3) | 2014 | $2,419 | $3,650 | 2025-12 |
| Fall River Police Working Dog Foundation Inc | Fall River | 501(c)(3) | 2018 | $2,317 | $16,852 | 2025-12 |
| Senior Tales Animal Rescue Inc | Southborough | 501(c)(3) | 2022 | $2,018 | $81,901 | 2025-12 |
| Dartmouth Dog Advisory Work Group | New Bedford | 501(c)(3) | 2012 | $1,391 | $21,415 | 2025-12 |
| Friends of Danvers Dog Park | Danvers | 501(c)(3) | 2018 | $1,361 | $5,766 | 2024-12 |
| Michael Panagakos Foundation LTD | Dartmouth | 501(c)(3) | 2011 | $1,205 | $82,136 | 2025-12 |
| Great Danes Around New England Rescue Inc | Adams | 501(c)(3) | 2011 | $600 | $359 | 2024-12 |
| Elephant Planet Inc | Greenfield | 501(c)(3) | 2006 | $51 | $4,580 | 2025-12 |
| Concerned Citizens for Animals Inc | Longmeadow | 501(c)(3) | 1976 | $35 | $11,727 | 2024-06 |
| 4 Paws Stronger Inc | Mashpee | 501(c)(3) | 2026 | $104 | 2021-12 | |
| 4 Precious Paws Rescue Inc | Northbridge | 501(c)(3) | 2024 | |||
| A Home for Weary Wanderers | Kingston | 501(c)(3) | 2023 | $0 | $3,392 | 2025-12 |
| A Roof Together | Winthrop | 501(c)(3) | 2025 | |||
| A Salute To Soldiers Foundation Inc | Springfield | 501(c)(3) | 2026 | |||
| A-Dog the Arlington Dog Owners Group Inc | Arlington | 501(c)(3) | 2009 | $0 | $0 | 2024-12 |
| Abare Foundation 777 Inc | Methuen | 501(c)(3) | 2023 | $8,893 | 2025-12 | |
| Adopt A Cat of Concord | Concord | 501(c)(3) | 2013 | $0 | $0 | 2024-06 |
| Aisling Center Inc | Belchertown | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Alice Manning Trust Ua Fbo American Humane Education Society | Boston | 501(c)(3) | 1969 | |||
| Alishas Equine Refuge and Outreach | Stockbridge | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| All Dogs Lives Matter Dog Rescue Inc | Braintree | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Amazing Grace Equine | Middleboro | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| American Rhino Foundation Inc | Wakefield | 501(c)(3) | 2016 | $2,181 | 2024-12 | |
| American Speciality of Veterinary E CC Inc | North Grafton | 501(c)(3) | 2025 | |||
| Amphibian and Reptile Trust International | Gardner | 501(c)(3) | 2020 | $0 | $0 | 2024-06 |
| Angelcat Haven Feline Rescue | Plainville | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Animal Advocates Inc | Westport | 501(c)(3) | 1995 | $0 | $0 | 2025-12 |
| Animal Planet | Berlin | 501(c)(3) | 2003 | $0 | $0 | 2025-07 |
| Animal Rescue Konnection Inc | Gloucester | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Animal Talks Inc | Roslindale | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Animals Are Sentient Beings Inc | Watertown | 501(c)(3) | 2009 | $0 | $0 | 2026-06 |
| Artists for Wildlife Conservation Inc | Brookline | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| As Sweet As A Peach Animal Rescue Inc | Framingham | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Barc Inc | Belchertown | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Bare Cove Preservation | Weymouth | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Bay State Animal Cooperative | Norwood | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Bay State Beagle Club Inc | Berkley | 501(c)(4) | 2017 | $0 | $0 | 2025-12 |
| Beegrateful Inc | Dartmouth | 501(c)(3) | 2018 | $0 | $0 | 2024-06 |
| Bellas Family Foundation | Springfield | 501(c)(3) | 2016 | $0 | $0 | 2024-12 |
| Berkshire County Turtle Rescue Inc | Pittsfield | 501(c)(3) | 2023 | $4,600 | 2025-10 | |
| Berlin Police Working Dog Foundation Inc | Berlin | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Bernese Education and Rescue- Northeast Region Inc | Franklin | 501(c)(3) | 2009 | $0 | $0 | 2024-12 |
| Blackstone Valley Herding Group Association Inc | Spencer | 501(c)(3) | 2023 | $0 | $0 | 2025-09 |
| Blues Bridge Inc | Swampscott | 501(c)(3) | 2020 | $0 | $65,138 | 2024-12 |
| Boston Aquarium Society Inc | Bridgewater | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Boston Work Horse Relief Association Inc | Auburn | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Boxborough Police K9 Association | Boxborough | 501(c)(3) | 2024 | |||
| Breezing Home | Harvard | 501(c)(3) | 2024 | |||
| Briard Club of America Health and Education Foundation | Spencer | 501(c)(3) | 2005 | $0 | $0 | 2024-12 |
| C L A W S of Mashpee Inc | Marstons MLS | 501(c)(3) | 1997 | $0 | $0 | 2024-12 |
| Callahan Canine Owners Association | Framingham | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Canal Cat Rescue | Bourne | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Cape Ann Wildlife | Essex | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Cape Cod Bird Club Inc | South Harwich | 501(c)(3) | 2014 | $0 | $0 | 2026-06 |
| Cape Cod Disaster Animal Response Team Inc | W Barnstable | 501(c)(3) | 2009 | $0 | $0 | 2025-06 |
| Cape Cod Doxie Day Inc | Cataumet | 501(c)(3) | 2026 | |||
| Capron Zoological Society | Attleboro | 501(c)(3) | 2026 | |||
| Caring Canines Visiting Therapy Dogs Inc | Bedford | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Cat Connection Inc | Worcester | 501(c)(3) | 2018 | $1.6 million | 2025-12 | |
| Cat Haven and Rescue Long Island Endeavor Inc | Douglas | 501(c)(3) | 2020 | $1 | 2025-12 | |
| Cat Life Rescue | Acushnet | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Cavalier Alliance for Rescue Research and Education | Bedford | 501(c)(3) | 2015 | $0 | $0 | 2023-12 |
| Cemeva Foundation | Lawrence | 501(c)(3) | 2021 | $0 | $0 | 2024-10 |
| Center for Integrative Veterinary Care Inc | Hopkinton | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Center for Sustainable Fisheries Inc | New Bedford | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Central Ma Kibble Kitchen Inc | Shrewsbury | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Central Mass Veterinary Emergency and Advanced Care Inc | Holden | 501(c)(3) | 2026 | |||
| Central Massachusetts Disaster Animal Response Team Inc | Douglas | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Central New England Brittany Club Inc | Methuen | 501(c)(3) | 2024 | $0 | $0 | 2026-01 |
| Champions of Habitat Unity and Feline Futures Limited | Dartmouth | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Charlene Ann Foundation Inc | Boylston | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Charlestowndogs Inc | Charlestown | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Charleys Angels Pet Initiative Inc | Norwood | 501(c)(3) | 2023 | $1 | 2025-12 | |
| Charleys Strays Inc | Waltham | 501(c)(3) | 1995 | $0 | $0 | 2025-09 |
| Charlies Place Healing Sanctuary | N Brookfield | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Chesapeake Safe Harbor & Pit Bull Safe Harbor Inc | Amherst | 501(c)(3) | 2015 | $0 | $0 | 2023-12 |
| Cif Wildlife Rehabilitation Inc | Harvard | 501(c)(3) | 2026 | |||
| Clemson Puppies With A Purpose | Dracut | 501(c)(3) | 2025 | $0 | $0 | 2025-06 |
| Clumber Spaniel Rescue Charitable Trust | Gloucester | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Cocomutts Inc | Plymouth | 501(c)(3) | 2024 | $0 | $0 | 2025-03 |
| Cold Noses Foundation Inc | Hyannis | 501(c)(3) | 2011 | $4,128 | 2024-12 | |
| Collaborative for Wildlife Justice Inc | South Easton | 501(c)(3) | 2024 | $0 | $428 | 2023-12 |
| Colrain Center for Conservation and Wildlife Rehabilitation | Colrain | 501(c)(3) | 2019 | $0 | $0 | 2023-12 |
| Comfort Care Foundation for Pets in C | Jamaica Plain | 501(c)(3) | 2026 | |||
| Commonwealth Cats | Peadoby | 501(c)(3) | 2004 | $0 | $0 | 2025-12 |
| Conservation Futures Africa Inc | Auburn | 501(c)(3) | 2018 | $0 | $0 | 2023-12 |
| Cornerstone Farm and Rescue | Bellingham | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Cowan Critters | Carver | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Cummington Wildlife Inc | Cummington | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Dales Pony Conservancy of North Ame Rica | Northampton | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Danny Boy Adoption Fund | Pittsfield | 501(c)(3) | 2015 | $0 | $0 | 2024-12 |
| Dawndale Farm Wildlife | Bernardston | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Deer Paths Inc | Wendell | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Diamond Brook Horse Sanctuary Inc | Boxford | 501(c)(3) | 2026 | |||
| Diego S Friends Farm Sanctuary Inc | Douglas | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Doberman Pinscher Club of America | North Grafton | 501(c)(3) | 2002 | $0 | $0 | 2025-09 |
| Down To Earth Animal Rescue & Sanctuary Inc | Buzzards Bay | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Drakies Dream Inc | Dorchester | 501(c)(3) | 2026 | |||
| Eagle Owl Foundation Inc | Palmer | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Earth Angel Guardians Animal Rescue Incorporated | Carver | 501(c)(3) | 2025 | |||
| Earth Comix Inc | Somerville | 501(c)(3) | 2015 | $0 | $0 | 2024-12 |
| Eastham Dog Owners Association | Eastham | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Echo for Animals Inc | Fitchburg | 501(c)(3) | 2026 | |||
| Elephant Aware USA Inc | Milton | 501(c)(3) | 2020 | $0 | $0 | 2024-12 |
| Epona Safe Haven Inc | Plympton | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| Essex County Rabbit and Cavy Breeders Association | Topsfield | 501(c)(5) | 2023 | $0 | $0 | 2025-12 |
| Evelyn Lindsay Crut Fbo Bennington Cty Humane Society Dba 2ND Chance | Lenox | 501(c)(3) | 2018 | $481,202 | 2025-12 | |
| Eye of the Storm Equine Rescue Inc | Northborough | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| Falmouth Dog Parks Inc | East Falmouth | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Family Paws Rescue | Plymouth | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Feed the Dog | Newburyport | 501(c)(3) | 2014 | $0 | $0 | 2023-12 |
| Fend | Pembroke | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Feral Cat and Canine Foundation - Se Ma | East Freetown | 501(c)(3) | 2024 | |||
| Ferret Rescue of Ma | Stow | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Fido of Natick Inc | Natick | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Finding You Sanctuary | Franklin | 501(c)(3) | 2017 | $0 | $0 | 2024-12 |
| Fitness Connectors Dog Rescue Inc | Dudley | 501(c)(3) | 2024 | $0 | $0 | 2023-12 |
| Fizzy Bean Animal Sanctuary Inc | Plymouth | 501(c)(3) | 2022 | $0 | $0 | 2025-06 |
| Flora and Fauna Wildlife Rehabilita Tion Inc | South Hadley | 501(c)(3) | 2026 | |||
| Flying Mutts Rescue | Attleboro | 501(c)(3) | 2016 | $0 | $0 | 2024-12 |
| Forbush Bird Club Inc | W Brookfield | 501(c)(3) | 2026 | |||
| Forever Farm | Middleboro | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Forgotten Angels Shelter Inc | Westford | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Forgotten Ones Horse Rescue Inc | Townsend | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Fortunate Ferrets | Braintree | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Four Legged Angels Inc | Middleboro | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Four Paws Pet Pantry Inc | Swansea | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Frambark | Framingham | 501(c)(3) | 2016 | $0 | $0 | 2023-12 |
| Frankies Promise To Paws Foundation | Beverly | 501(c)(3) | 2025 | |||
| Franklin Feline Foundation | Salem | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Free Bird & Wildlife Rehabilitation | Hopkinton | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Freedom Acres Inc | Swansea | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Freedom Fields Horse Sanctuary Inc | Georgetown | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Fresh Start Wildlife Rescue Inc | Sudbury | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Friends of Abington Dog Park | Abington | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Friends of Charlton Animal Shelter Inc | Charlton | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Friends of Fitchburg Dogs Inc | Fitchburg | 501(c)(3) | 2022 | $0 | $0 | 2024-01 |
| Friends of Foxboro Conservation Inc | Foxboro | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Friends of Gloucester Dog Park | Gloucester | 501(c)(3) | 2016 | $0 | $0 | 2025-06 |
| Friends of Kingston Dogs | Kingston | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Friends of Lilibet Inc | East Walpole | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Friends of Mill Towns Animal Shelte R Inc | Monson | 501(c)(3) | 2026 | |||
| Friends of Monomoy Inc | Brewster | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Friends of North Quabbin Dog Park | Orange | 501(c)(3) | 2014 | $0 | $0 | 2026-05 |
| Friends of Oxford Dog Park Inc | Oxford | 501(c)(3) | 2017 | $0 | $0 | 2025-06 |
| Friends of Ruth and Emily Inc | Wareham | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Friends of West Stockbridge Dog Park | W Stockbridge | 501(c)(3) | 2024 | $0 | $0 | 2026-06 |
| Friends of Yarmouth Dog Park | S Yarmouth | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Friends of the Billerica Dog Park Committee | Billerica | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Friends of the Butler Farm Dog Park Inc | Millbury | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Friends of the Canton Dog Park | Canton | 501(c)(3) | 2025 | |||
| Friends of the Centerville Cranberry Bog Preservation | Worcester | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Friends of the Fairhaven Animal She Lter | Fairhaven | 501(c)(3) | 2026 | |||
| Friends of the Marshfield Dog Park | Marshfield | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Friends of the Massachusetts Park Ranger Mounted Unit Inc | Canton | 501(c)(3) | 2016 | $0 | $0 | 2025-06 |
| Friends of the Oxford Animal Shelter | Oxford | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Friends of the Sharon Dog Park Inc | Sharon | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Friends of the Southwick Dog Park Inc | Southwick | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Friends of the Taunton Animal Care Facility Inc | Taunton | 501(c)(3) | 2001 | $0 | $0 | 2025-09 |
| Friends of the Turgwe Hippo Trust USA Incorporated | Webster | 501(c)(3) | 2022 | $0 | $0 | 2025-09 |
| Frog Hollow Farm Inc | Hubbardston | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Furever in Him Retirement Ranch and Retreat Inc | Pepperell | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Furkle Planet Inc | Marlborough | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Furry Friends of Franklin | Franklin | 501(c)(3) | 2018 | $0 | $0 | 2026-05 |
| Gamba Family Farm and Sanctuary Inc | Rehoboth | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Gatos Borincoon | Franklin | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| German Shepherd Resource and Rescue Center Incorporated | Nahant | 501(c)(3) | 2010 | $0 | $0 | 2024-12 |
| Global Veterinary Fund Inc | Chicopee | 501(c)(3) | 2025 | |||
| Glucodogs Inc | Harwich | 501(c)(3) | 2017 | $0 | $0 | 2024-12 |
| Golden Bough Wildlife Inc | Centerville | 501(c)(3) | 2017 | $0 | $0 | 2025-02 |
| Gordon Setter Club of America Rescue Foundation | Oak Bluffs | 501(c)(3) | 2015 | $0 | $0 | 2026-06 |
| Got Spots Etc Inc | Adams | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Great Barrington Kennel Club Inc | Dalton | 501(c)(7) | 2025 | |||
| Great Dane Club of New England Inc | Westminster | 501(c)(3) | 2002 | $0 | $0 | 2024-12 |
| Greater Boston Area Earthdog Club Inc | Milford | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| H2H Vets Inc | W Springfield | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Hampshire Bird Club Inc | Amherst | 501(c)(3) | 1999 | $0 | $0 | 2026-05 |
| Hare of the Dog Inc | Pembroke | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Healing Bond Foundation | Wellesley | 501(c)(3) | 2026 | |||
| Hearts and Paws Comfort Dogs Inc | Mashpee | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Hearts and Paws Foundation | East Boston | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Help Animals Survive the War in Ukraine Inc | Pittsfield | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
Every nonprofit in Massachusetts
Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.