Data / Nonprofits / California / Animal-related
Animal-related nonprofits in California: 4,923 registered with the IRS
4,923 animal-related nonprofits are registered with the IRS in California, 4,811 of them 501(c)(3) charities; the 1,737 that report revenue took in $2.37 billion. The most are in Los Angeles (193), San Diego (175), Sacramento (92). The largest by revenue: San Diego Zoo Wildlife Alliance ($437.6 million), Monterey Bay Aquarium Foundation ($208.1 million), Wildlife Conservation Network Inc ($86.1 million).
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The 500 largest by revenue
| Organization | City | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| San Diego Zoo Wildlife Alliance | San Diego | 501(c)(3) | 1942 | $437.6 million | $1.05 billion | 2024-12 |
| Monterey Bay Aquarium Foundation | Monterey | 501(c)(3) | 1978 | $208.1 million | $837.7 million | 2024-12 |
| Wildlife Conservation Network Inc | San Francisco | 501(c)(3) | 2002 | $86.1 million | $98.1 million | 2025-12 |
| San Diego Humane Society and Spca | San Diego | 501(c)(3) | 1938 | $67.6 million | $129.8 million | 2025-06 |
| Aquarium of the Pacific | Long Beach | 501(c)(3) | 1992 | $59.3 million | $100 million | 2024-12 |
| San Francisco Society for the Prevention of Cruelty To Animals | San Francisco | 501(c)(3) | 2001 | $58.3 million | $137.4 million | 2025-06 |
| Conservation Society of California | Oakland | 501(c)(3) | 1953 | $35 million | $92.9 million | 2025-09 |
| Point Reyes Bird Observatory | Petaluma | 501(c)(3) | 1965 | $31.7 million | $26.4 million | 2025-03 |
| Fresnos Chaffee Zoo Corporation | Fresno | 501(c)(3) | 2005 | $29.6 million | $146.8 million | 2024-12 |
| Peninsula Humane Society & Spca | Burlingame | 501(c)(3) | 1954 | $28.1 million | $86.3 million | 2025-06 |
| California Trout | San Francisco | 501(c)(3) | 1971 | $24.7 million | $16.5 million | 2025-06 |
| Helen Woodward Animal Center | Rcho Santa Fe | 501(c)(3) | 1972 | $24 million | $84.2 million | 2024-12 |
| Mercy for Animals | Los Angeles | 501(c)(3) | 2004 | $23.3 million | $30.2 million | 2024-12 |
| San Francisco Zoological Society | San Francisco | 501(c)(3) | 1956 | $23.1 million | $20 million | 2025-06 |
| The David Sheldrick Wildlife Trust USA Inc | Laguna Hills | 501(c)(3) | 2004 | $22.8 million | $24.4 million | 2026-03 |
| Santa Barbara Zoological Foundation | Santa Barbara | 501(c)(3) | 1964 | $21.8 million | $47 million | 2024-12 |
| Greater Los Angeles Zoo Association | Glendale | 501(c)(3) | 1964 | $21.3 million | $55.7 million | 2025-06 |
| Humane Society Silicon Valley | Milpitas | 501(c)(3) | 1942 | $20.9 million | $56.1 million | 2025-06 |
| Animal Legal Defense Fund | Sacramento | 501(c)(3) | 1980 | $19.7 million | $24.8 million | 2025-06 |
| Marine Mammal Center | Sausalito | 501(c)(3) | 1995 | $18.6 million | $50 million | 2025-09 |
| Revive & Restore | Sausalito | 501(c)(3) | 2017 | $16.3 million | $25.9 million | 2025-12 |
| Pasadena Humane Society | Pasadena | 501(c)(3) | 1939 | $15.8 million | $43.9 million | 2024-12 |
| Sacramento Society for the Prevention of Cruelty To Animals | Sacramento | 501(c)(3) | 1957 | $15.4 million | $35.1 million | 2024-12 |
| East Bay Society for the Prevention of Cruelty To Animals | Oakland | 501(c)(3) | 1957 | $14.8 million | $46.7 million | 2025-12 |
| Foster Friends Rescue | Gardena | 501(c)(3) | 2020 | $14.7 million | $14.5 million | 2024-12 |
| Inter-American Tropical Tuna Commission | La Jolla | 501(c)(3) | 1988 | $14.3 million | $9.8 million | 2024-12 |
| Marin Humane Society | Novato | 501(c)(3) | 1950 | $14 million | $31.5 million | 2025-06 |
| National Marine Mammal Foundation Inc | San Diego | 501(c)(3) | 2008 | $13.9 million | $4.1 million | 2024-12 |
| Los Angeles S P C A | Los Angeles | 501(c)(3) | 1934 | $13.4 million | $71.1 million | 2025-08 |
| Joybound People and Pets Fka Tony Larussas Animal Rescue Foundation | Walnut Creek | 501(c)(3) | 1996 | $13.4 million | $87.9 million | 2025-06 |
| Society for the Prevention of Cruelty To Animals of Monterey Cty | Salinas | 501(c)(3) | 1955 | $12.9 million | $84 million | 2025-06 |
| Humane Society of Pomona Valley Inc | Pomona | 501(c)(3) | 1965 | $12.7 million | $25.7 million | 2025-06 |
| Sacramento Zoological Society | Sacramento | 501(c)(3) | 1959 | $12.4 million | $27.4 million | 2024-12 |
| Wildaid Inc | San Francisco | 501(c)(3) | 2006 | $12 million | $8.9 million | 2025-06 |
| Community Animal Medicine Project | San Pedro | 501(c)(3) | 2007 | $11.5 million | $7.2 million | 2024-12 |
| Animal Samaritans | Thousand PLMS | 501(c)(3) | 1978 | $11.4 million | $10 million | 2024-12 |
| California Deer Association | Redding | 501(c)(3) | 1997 | $11.3 million | $4.6 million | 2024-07 |
| Muttville | San Francisco | 501(c)(3) | 2008 | $10.8 million | $63.3 million | 2024-12 |
| Humane America Animal Foundation | Claremont | 501(c)(3) | 2000 | $10.2 million | $39.8 million | 2023-12 |
| Santa Barbara Humane Society for the Prevention of Cruelty To Anima | Santa Barbara | 501(c)(3) | 1954 | $9.4 million | $52.2 million | 2025-12 |
| Prestons Planet Foundation Inc | Malibu | 501(c)(3) | 2021 | $9.2 million | $9.1 million | 2024-12 |
| Placer County Society for the Prevention of Cruelty To Animals | Roseville | 501(c)(3) | 1977 | $8.9 million | $32 million | 2024-12 |
| Rancho Coastal Humane Society | Encinitas | 501(c)(3) | 1967 | $8.4 million | $32.5 million | 2025-06 |
| Animal Charity Evaluators | Covina | 501(c)(3) | 2011 | $7.8 million | $5.5 million | 2025-03 |
| Oscars Place Adoption Center & Sanctuary | Hopland | 501(c)(3) | 2022 | $7.6 million | $4.7 million | 2025-12 |
| Wags and Walks | Los Angeles | 501(c)(3) | 2012 | $7.6 million | $7.8 million | 2025-12 |
| Berkeley East Bay Humane Society Inc | Berkeley | 501(c)(3) | 1953 | $7.4 million | $13.8 million | 2025-12 |
| Romanian League in Defense of Anima LS | Concord | 501(c)(3) | 2006 | $7.3 million | $776,864 | 2025-06 |
| Bubye Valley Conservation Research | Pleasanton | 501(c)(3) | 2015 | $7.3 million | $246,879 | 2024-12 |
| Dedication and Everlasting Love To Animals | Glendale | 501(c)(3) | 1985 | $7 million | $12.7 million | 2024-12 |
| Friends of the Palm Springs Animal Shelter | Palm Springs | 501(c)(3) | 1996 | $6.9 million | $5.2 million | 2025-12 |
| Fresno H O P E Animal Foundation | Fresno | 501(c)(3) | 1999 | $6.8 million | $8.7 million | 2025-12 |
| Hope for Paws | Studio City | 501(c)(3) | 2008 | $6.6 million | $7.2 million | 2024-12 |
| Hubbs Sea World Research Institute | San Diego | 501(c)(3) | 1963 | $6.4 million | $7.7 million | 2025-06 |
| Pets in Need | Redwood City | 501(c)(3) | 1967 | $6.2 million | $11.6 million | 2025-04 |
| Performing Animal Welfare Society | Galt | 501(c)(3) | 1986 | $6 million | $41 million | 2025-12 |
| Animal Equality | Los Angeles | 501(c)(3) | 2015 | $6 million | $3.1 million | 2025-12 |
| Humanity for Horses | Mount Shasta | 501(c)(3) | 2011 | $5.9 million | $12.3 million | 2024-12 |
| Humane Farming Association | San Rafael | 501(c)(3) | 1986 | $5.7 million | $23.7 million | 2024-12 |
| Lions Tigers & Bears | Alpine | 501(c)(3) | 2003 | $5.4 million | $12.1 million | 2024-12 |
| All Seated in A Barn | Shafter | 501(c)(3) | 2018 | $5.2 million | $1.2 million | 2024-12 |
| Nine Lives Foundation | Redwood City | 501(c)(3) | 2005 | $5.1 million | $6.2 million | 2025-12 |
| Humane Society of Sonoma County | Santa Rosa | 501(c)(3) | 1943 | $5.1 million | $11.6 million | 2025-06 |
| Affordable Pet Care Group of Los Angeles | Los Angeles | 501(c)(3) | 2017 | $5 million | $1.7 million | 2024-12 |
| Small Wild Cat Conservation Foundation | Monte Sereno | 501(c)(3) | 2009 | $4.9 million | $6.3 million | 2025-12 |
| Woods Humane Society Inc | SN Luis Obisp | 501(c)(3) | 1964 | $4.9 million | $16.6 million | 2025-06 |
| Fresno Humane Animal Services | Fresno | 501(c)(3) | 2015 | $4.7 million | $1.5 million | 2025-12 |
| California State Wildlife Foundation | Berkeley | 501(c)(3) | 1991 | $4.7 million | $14.6 million | 2025-06 |
| Spay Neuter Imperative Project California | Pebble Beach | 501(c)(3) | 2013 | $4.7 million | $1.1 million | 2025-03 |
| Friends of the Sea Lion Inc | Laguna Beach | 501(c)(3) | 1982 | $4.7 million | $26.2 million | 2024-12 |
| Greater Farallones Association | San Francisco | 501(c)(3) | 1996 | $4.6 million | $1.7 million | 2025-03 |
| Heron Court Cooperative Inc | Redwood City | 501(c)(3) | 1984 | $4.5 million | $16.3 million | 2024-12 |
| California Marine Sanctuary Foundation | Monterey | 501(c)(3) | 1996 | $4.5 million | $5 million | 2024-12 |
| Riverside Humane Society Pet Adoption Center | Riverside | 501(c)(3) | 1943 | $4.3 million | $4.3 million | 2024-12 |
| Pets Lifeline Inc | Sonoma | 501(c)(3) | 1984 | $4.3 million | $7.9 million | 2024-12 |
| Salmonid Restoration Federation | Eureka | 501(c)(3) | 1993 | $4.2 million | $2.5 million | 2025-12 |
| California Land Stewardship Institute | Napa | 501(c)(3) | 2005 | $4.2 million | $1.5 million | 2025-12 |
| Gentle Barn Foundation | Santa Clarita | 501(c)(3) | 2000 | $4.1 million | $2.9 million | 2025-12 |
| International Bird Rescue | Fairfield | 501(c)(3) | 1972 | $4.1 million | $2.3 million | 2025-09 |
| Bunny Museum | Altadena | 501(c)(3) | 2014 | $4 million | $3.8 million | 2025-12 |
| Amber and Adam Tarshis Foundation | Los Angeles | 501(c)(3) | 2026 | $3.9 million | $3.7 million | 2024-12 |
| Stray Cat Alliance | Los Angeles | 501(c)(3) | 2000 | $3.9 million | $1.2 million | 2024-12 |
| Friends of the Alameda Animal Shelter | Alameda | 501(c)(3) | 2009 | $3.8 million | $4.9 million | 2025-06 |
| Paws for Life K9 Rescue | Thousand Oaks | 501(c)(3) | 2019 | $3.7 million | $2.3 million | 2024-12 |
| The Cat House On the Kings Inc | Parlier | 501(c)(3) | 2002 | $3.7 million | $7.5 million | 2024-12 |
| Golden State Humane Society | Garden Grove | 501(c)(3) | 1979 | $3.6 million | $1.4 million | 2024-12 |
| Haven Humane Society | Redding | 501(c)(3) | 1959 | $3.5 million | $15 million | 2025-12 |
| Marine Mammal Care Center Los Angeles | San Pedro | 501(c)(3) | 2016 | $3.5 million | $3.3 million | 2025-12 |
| Ramona Humane Society Inc | San Jacinto | 501(c)(3) | 1974 | $3.4 million | $5.2 million | 2024-12 |
| Turtle Conservancy | Ojai | 501(c)(3) | 2006 | $3.3 million | $2.6 million | 2024-12 |
| Humane Society of San Bernardino Valley | SN Bernrdno | 501(c)(3) | 1972 | $3.3 million | $11.6 million | 2025-03 |
| The Institute for Bird Populations | Petaluma | 501(c)(3) | 1994 | $3.1 million | $998,308 | 2024-12 |
| Mercy Crusade Inc | Oxnard | 501(c)(3) | 1952 | $3.1 million | $3.4 million | 2024-12 |
| Sky Dog Sanctuary Inc | Malibu | 501(c)(3) | 2016 | $3.1 million | $3.3 million | 2024-12 |
| Donkeyland | Riverside | 501(c)(3) | 2011 | $3.1 million | $12.6 million | 2024-12 |
| Valley Humane Society Inc | Pleasanton | 501(c)(3) | 1987 | $3.1 million | $5.7 million | 2024-12 |
| Butte Humane Society | Chico | 501(c)(3) | 1971 | $3.1 million | $11.9 million | 2025-06 |
| Frosted Faces Foundation Inc | Ramona | 501(c)(3) | 2016 | $2.9 million | $4.3 million | 2025-12 |
| In Defense of Animals | San Rafael | 501(c)(3) | 1984 | $2.9 million | $9.2 million | 2024-12 |
| Sammies Friends | Grass Valley | 501(c)(3) | 2004 | $2.9 million | $473,546 | 2025-12 |
| Institute for Wildlife Studies | Eureka | 501(c)(3) | 1979 | $2.9 million | $6.8 million | 2024-12 |
| Simi Valley Nonprofit Spay & Neuter Clinic Incorporated | Simi Valley | 501(c)(3) | 2001 | $2.8 million | $2.7 million | 2024-12 |
| Animal Place | Grass Valley | 501(c)(3) | 1994 | $2.8 million | $14.4 million | 2024-12 |
| Bakersfield Society for the Prevention Cruelty To Animals Corp | Bakersfield | 501(c)(3) | 1966 | $2.8 million | $2.6 million | 2025-06 |
| Santa Barbara Wildlife Care Network | Goleta | 501(c)(3) | 1993 | $2.8 million | $9.7 million | 2025-06 |
| Milo Foundation | Albany | 501(c)(3) | 1994 | $2.7 million | $2.2 million | 2025-05 |
| Hard Luck Animal Welfare Advocates | Sacramento | 501(c)(3) | 2024 | $2.7 million | $242,234 | 2025-12 |
| Ventana Wildlife Society | Monterey | 501(c)(3) | 1982 | $2.7 million | $5.7 million | 2025-03 |
| Last Chance for Animals | Los Angeles | 501(c)(3) | 1986 | $2.6 million | $4.7 million | 2024-12 |
| Beagle Freedom Project | Valley VLG | 501(c)(3) | 2004 | $2.6 million | $4.3 million | 2025-06 |
| Compassion Without Borders | Santa Rosa | 501(c)(3) | 2006 | $2.6 million | $2.3 million | 2025-06 |
| Southern California Equine Foundation Inc | Arcadia | 501(c)(3) | 1977 | $2.6 million | $3.4 million | 2026-03 |
| Animal Wellness Foundation | Marina DL Rey | 501(c)(3) | 2012 | $2.5 million | $3.1 million | 2024-12 |
| Humane Society of Ventura County | Ojai | 501(c)(3) | 1966 | $2.5 million | $45.4 million | 2023-12 |
| Sonoma County Wildlife Rescue | Sonoma | 501(c)(3) | 1981 | $2.5 million | $2.5 million | 2024-12 |
| C A R E 4 Paws Inc | Santa Barbara | 501(c)(3) | 2009 | $2.5 million | $1 million | 2025-12 |
| Wings of Rescue Inc | San Diego | 501(c)(3) | 2012 | $2.5 million | $2.5 million | 2024-12 |
| Wild Africa | Lafayette | 501(c)(3) | 2023 | $2.5 million | $2.3 million | 2024-12 |
| Central California Society for the Prevention of Cruelty To Amimals | Fresno | 501(c)(3) | 1951 | $2.4 million | $15.3 million | 2025-06 |
| Pasadena Audubon Society | Pasadena | 501(c)(3) | 1972 | $2.4 million | $3.5 million | 2025-06 |
| Hemopet | Garden Grove | 501(c)(3) | 1986 | $2.4 million | $314,359 | 2024-12 |
| Association of German Shepherd Rescuers Inc | Newport Beach | 501(c)(3) | 2009 | $2.4 million | $2.7 million | 2025-12 |
| Valley Animal Center | Fresno | 501(c)(3) | 2000 | $2.4 million | $2.4 million | 2024-12 |
| Peace of Mind Dog Rescue | Pacific Grove | 501(c)(3) | 2010 | $2.4 million | $6 million | 2024-12 |
| Lifesavers Inc | Caliente | 501(c)(3) | 1997 | $2.4 million | $7.1 million | 2025-06 |
| Return To Freedom Inc | Lompoc | 501(c)(3) | 1997 | $2.3 million | $1.4 million | 2024-12 |
| Pet Care Foundation | Northridge | 501(c)(3) | 2003 | $2.3 million | $18 million | 2024-12 |
| Onereef Worldwide Stewardship | Palo Alto | 501(c)(3) | 2014 | $2.3 million | $2 million | 2025-12 |
| Priceless Puppy Rescue Corp | Chino Hills | 501(c)(3) | 2008 | $2.3 million | $3.4 million | 2025-12 |
| The Amanda Foundation | Beverly Hills | 501(c)(3) | 1990 | $2.3 million | $7.9 million | 2024-12 |
| Iafci | El Dorado HLS | 501(c)(6) | 1971 | $2.2 million | $3.4 million | 2024-12 |
| Westside Shepherd Rescue of Los Angeles Inc | Los Angeles | 501(c)(3) | 2003 | $2.2 million | $5.3 million | 2024-12 |
| Sentient Media | San Francisco | 501(c)(3) | 2019 | $2.2 million | $2.3 million | 2024-12 |
| Stray Paws Animal Haven | S El Monte | 501(c)(3) | 2019 | $2.2 million | $382,013 | 2024-12 |
| Willows Wags and Whiskers | San Clemente | 501(c)(3) | 2015 | $2.2 million | $541,118 | 2025-12 |
| Humane Society of Truckee Tahoe Inc | Truckee | 501(c)(3) | 1996 | $2.2 million | $4.8 million | 2024-12 |
| Monterey Bay Salmon & Trout Project | Watsonville | 501(c)(3) | 1987 | $2.2 million | $488,377 | 2025-12 |
| Humane Society of the Chaffey Community Inc | Ontario | 501(c)(3) | 1959 | $2.1 million | $2.3 million | 2025-06 |
| Fixnation Inc | Woodland HLS | 501(c)(3) | 2006 | $2.1 million | $3.1 million | 2024-12 |
| Second Chances for Blind Dogs Foundation Inc | Sherman Oaks | 501(c)(3) | 2014 | $2.1 million | $1.1 million | 2024-12 |
| Critters Without Litters Inc | Bakersfield | 501(c)(3) | 2010 | $2.1 million | $980,942 | 2024-12 |
| Friends of the Oakland Animalshelter | Oakland | 501(c)(3) | 2007 | $2 million | $1.1 million | 2025-06 |
| Northwest Society for the Prevention of Cruelty To Animals | Oroville | 501(c)(3) | 1981 | $2 million | $1.7 million | 2025-06 |
| Santa Ynez Valley Humane Society | Buellton | 501(c)(3) | 1980 | $2 million | $10 million | 2024-12 |
| Bird Rescue Center | Santa Rosa | 501(c)(3) | 1977 | $2 million | $5.9 million | 2024-12 |
| Coastal K9 German Shepherd Rescue | San Diego | 501(c)(3) | 2013 | $2 million | $3.4 million | 2025-12 |
| Friends of Santa Ana Zoo | Santa Ana | 501(c)(3) | 1976 | $2 million | $4.8 million | 2024-12 |
| Sierra Pacific Furbabies Inc | Mira Loma | 501(c)(3) | 2014 | $2 million | $619,570 | 2024-12 |
| Heaven On Earth Society for Animals Inc | N Hollywood | 501(c)(3) | 2000 | $2 million | $1.9 million | 2024-12 |
| Upwell Turtles | Monterey | 501(c)(3) | 2017 | $2 million | $1.6 million | 2025-12 |
| Animal Pad | La Mesa | 501(c)(3) | 2013 | $2 million | $2 million | 2024-12 |
| High Sierra Animal Rescue Inc | Portola | 501(c)(3) | 1999 | $1.9 million | $4.5 million | 2025-12 |
| Horsepower Sanctuaries | Paso Robles | 501(c)(3) | 1995 | $1.9 million | $8.1 million | 2025-05 |
| Legal Impact for Chickens | Sacramento | 501(c)(3) | 2022 | $1.9 million | $2.2 million | 2024-12 |
| Wildlife and Environmental Conservation Incorporated | Moorpark | 501(c)(3) | 2007 | $1.9 million | $4.3 million | 2025-12 |
| Homeward Bound Golden Retriever Rescue and Sanctuary Inc | Elverta | 501(c)(3) | 2000 | $1.9 million | $6 million | 2025-12 |
| Orphan Kitten Club Inc | Spring Valley | 501(c)(3) | 2018 | $1.9 million | $2.6 million | 2024-12 |
| Shelter To Soldier Inc | San Diego | 501(c)(3) | 2012 | $1.9 million | $1.7 million | 2024-12 |
| MGVP Inc | Davis | 501(c)(3) | 2006 | $1.9 million | $1.7 million | 2025-06 |
| Road Dogs & Rescue | Lomita | 501(c)(3) | 2018 | $1.8 million | $1.2 million | 2024-12 |
| Community Spay Neuter Clinic | Sacramento | 501(c)(3) | 2018 | $1.8 million | $776,615 | 2025-12 |
| Kitten Rescue | Los Angeles | 501(c)(3) | 1999 | $1.8 million | $1.4 million | 2024-12 |
| Birchbark Foundation Inc | Santa Cruz | 501(c)(3) | 2017 | $1.8 million | $1.6 million | 2024-12 |
| Friends of Seal Beach Animal Care Center Inc | Seal Beach | 501(c)(3) | 1988 | $1.8 million | $4.4 million | 2025-12 |
| Paw Works Inc | Camarillo | 501(c)(3) | 2014 | $1.8 million | $929,419 | 2024-12 |
| Animal Rescue Center of California | Coachella | 501(c)(3) | 2020 | $1.8 million | $1.3 million | 2025-12 |
| Kinder4rescue | N Hollywood | 501(c)(3) | 2008 | $1.8 million | $416,404 | 2025-12 |
| Harbin SHS Animal Rescue Corp | San Diego | 501(c)(3) | 2020 | $1.8 million | $493,356 | 2025-12 |
| Friends of Cabrillo Marine Aquarium | San Pedro | 501(c)(3) | 1994 | $1.7 million | $1.7 million | 2025-06 |
| Animals Asia Foundation Us Inc | El Segundo | 501(c)(3) | 2024 | $1.7 million | $1.7 million | 2025-12 |
| Valley Oak Society for the Prevention of Cruelty To Animals | Visalia | 501(c)(3) | 1982 | $1.7 million | $2.7 million | 2024-12 |
| Community Animal Treatment Center Catc | Burbank | 501(c)(3) | 2024 | $1.7 million | $101,518 | 2025-12 |
| Cat Welfare Advocates | San Jose | 501(c)(3) | 2017 | $1.7 million | $1.7 million | 2025-12 |
| Eel River Watershed Improvement Group | Fortuna | 501(c)(3) | 1998 | $1.7 million | $85,970 | 2025-06 |
| Fieldhaven Feline Center | Lincoln | 501(c)(3) | 2004 | $1.7 million | $1.8 million | 2024-12 |
| Monterey Zoological Society | Salinas | 501(c)(3) | 2011 | $1.7 million | $3 million | 2024-12 |
| Santa Cruz Spca and Humane Society | Santa Cruz | 501(c)(3) | 1968 | $1.7 million | $11 million | 2025-06 |
| Pet Orphans of Southern California | Van Nuys | 501(c)(3) | 1973 | $1.7 million | $758,666 | 2025-08 |
| Humane Animal Services Inc | Vacaville | 501(c)(3) | 1987 | $1.7 million | $1.6 million | 2025-06 |
| Eastwood Ranch Foundation | Agoura Hills | 501(c)(3) | 2013 | $1.7 million | $8.5 million | 2025-12 |
| Marleys Mutts Dog Rescue | Tehachapi | 501(c)(3) | 2010 | $1.6 million | $1.2 million | 2024-12 |
| California Doodle Rescue | Huntingtn BCH | 501(c)(3) | 2022 | $1.6 million | $1.8 million | 2025-12 |
| Building Better Partnerships Inc | Yuba City | 501(c)(3) | 2014 | $1.6 million | $1.1 million | 2025-03 |
| Fix Our Ferals | Pinole | 501(c)(3) | 1998 | $1.6 million | $1.8 million | 2024-12 |
| G Bar K Foundation | Lakewood | 501(c)(3) | 2006 | $1.6 million | $3.2 million | 2024-12 |
| Another Chance Animal Welfare League | Redding | 501(c)(3) | 2006 | $1.6 million | $1.6 million | 2024-12 |
| Los Angeles County Animal Care Foundation | Long Beach | 501(c)(3) | 2022 | $1.6 million | $3.4 million | 2024-12 |
| Santa Paula Animal Rescue Center Inc | Thousand Oaks | 501(c)(3) | 2012 | $1.6 million | $450,927 | 2025-12 |
| Humane Society of Napa County | Napa | 501(c)(3) | 1973 | $1.6 million | $7 million | 2024-12 |
| California Institute of Environmental Studies | Davis | 501(c)(3) | 1977 | $1.6 million | $605,338 | 2025-09 |
| Spay-Neuter Action Project | Encinitas | 501(c)(3) | 1996 | $1.6 million | $826,719 | 2025-03 |
| Pet Adoption Fund | Canoga Park | 501(c)(3) | 1983 | $1.6 million | $7.1 million | 2024-12 |
| Promotion of Animal Welfare Society | Oroville | 501(c)(3) | 1993 | $1.5 million | $592,152 | 2025-06 |
| Humane Society of the North Bay | Vallejo | 501(c)(3) | 1987 | $1.5 million | $1.4 million | 2024-12 |
| Villa Chardonnay Horses With Wings | La Jolla | 501(c)(3) | 2018 | $1.5 million | $3,073 | 2024-12 |
| Dogwood Animal Rescue Project Inc | Santa Rosa | 501(c)(3) | 2016 | $1.5 million | $650,524 | 2024-12 |
| Friends of Upland Animal Shelter Inc | Upland | 501(c)(3) | 2013 | $1.5 million | $503,834 | 2025-12 |
| Goatlandia Farm Animal Sanctuary and Education Center | Sebastopol | 501(c)(3) | 2017 | $1.5 million | $1.8 million | 2025-12 |
| Animal Assistance League of Orange County Incorporated | Midway City | 501(c)(3) | 1976 | $1.5 million | $1.6 million | 2025-08 |
| Rescue Ranch | Yreka | 501(c)(3) | 2000 | $1.5 million | $919,880 | 2024-12 |
| Animal Outreach of the Mother Lode | Diamond SPGS | 501(c)(3) | 1994 | $1.5 million | $2.6 million | 2025-12 |
| Noyo Center for Marine Science | Fort Bragg | 501(c)(3) | 2015 | $1.4 million | $1.9 million | 2024-12 |
| Happy Hollow Corporation | San Jose | 501(c)(3) | 1972 | $1.4 million | $1.9 million | 2025-06 |
| Vets in Vans Inc | Oakland | 501(c)(3) | 2023 | $1.4 million | $530,871 | 2024-12 |
| Westminster Adoption Group and Services Inc | Westminster | 501(c)(3) | 2011 | $1.4 million | $388,203 | 2024-12 |
| Bettertogether Forever | Glendale | 501(c)(3) | 2004 | $1.4 million | $407,556 | 2024-12 |
| Spay4la Inc | Los Angeles | 501(c)(3) | 2012 | $1.4 million | $329,141 | 2024-12 |
| Pups Without Borders | Van Nuys | 501(c)(3) | 2021 | $1.4 million | $374,241 | 2025-12 |
| Pacific Wildlife Care | Morro Bay | 501(c)(3) | 1987 | $1.4 million | $6.9 million | 2024-12 |
| Friends of Cats Inc | El Cajon | 501(c)(3) | 1965 | $1.3 million | $4.1 million | 2025-12 |
| Actors & Others for Animals | N Hollywood | 501(c)(3) | 1972 | $1.3 million | $7.1 million | 2024-11 |
| Rocket Dog Rescue Inc | Oakland | 501(c)(3) | 2012 | $1.3 million | $1.3 million | 2025-07 |
| Animal Spay and Neuter A Non-Profit Clinic | Auburn | 501(c)(3) | 1994 | $1.3 million | $753,268 | 2024-12 |
| Cat Town | Oakland | 501(c)(3) | 2011 | $1.3 million | $980,730 | 2024-12 |
| National Cat Protection Society | Newport Beach | 501(c)(3) | 1969 | $1.3 million | $8.1 million | 2025-05 |
| Labelle Foundation Inc | Los Angeles | 501(c)(3) | 2019 | $1.3 million | $405,857 | 2024-12 |
| Channel Islands Marine and Wildlife Institute Inc | Gaviota | 501(c)(3) | 2004 | $1.3 million | $3 million | 2024-12 |
| Global Resources for Environmental Education and Nature | W Sacramento | 501(c)(3) | 2001 | $1.3 million | $2.7 million | 2024-12 |
| Association of Veterinary Laboratory Diagnosticians Inc | Porterville | 501(c)(3) | 1994 | $1.2 million | $1.1 million | 2025-06 |
| Switch 4 Good Inc | Irvine | 501(c)(3) | 2017 | $1.2 million | $228,913 | 2025-12 |
| Camp Cocker Rescue Inc | Sherman Oaks | 501(c)(3) | 2007 | $1.2 million | $193,849 | 2025-12 |
| California Wetfish Producers Association | Buellton | 501(c)(6) | 2004 | $1.2 million | $923,305 | 2025-03 |
| Snow Leopard Conservancy | San Francisco | 501(c)(3) | 2011 | $1.2 million | $1.6 million | 2025-12 |
| Ecoflix Foundation Inc | Hidden Hills | 501(c)(3) | 2004 | $1.2 million | $1.1 million | 2024-12 |
| Canine Adoption and Rescue League | Ventura | 501(c)(3) | 1996 | $1.2 million | $1.1 million | 2024-06 |
| Pet Project Foundation Inc | San Clemente | 501(c)(3) | 1985 | $1.2 million | $5.5 million | 2025-06 |
| A Passion for Paws Rescue Inc | Romoland | 501(c)(3) | 2006 | $1.2 million | $2.2 million | 2024-12 |
| Oceans Forward | Covina | 501(c)(3) | 2014 | $1.2 million | $668,334 | 2024-12 |
| Humane Society of Imperial County | El Centro | 501(c)(3) | 1973 | $1.2 million | $991,913 | 2024-12 |
| Animal Shelter Assistance Program of Santa Barbara | Goleta | 501(c)(3) | 1992 | $1.2 million | $2 million | 2024-12 |
| Norcal Aussie Rescue Inc | Auburn | 501(c)(3) | 2004 | $1.1 million | $925,699 | 2025-12 |
| California Retirement Management Account Inc | Arcadia | 501(c)(3) | 2008 | $1.1 million | $2.8 million | 2024-12 |
| Orange County Society for the Prevention of Cruelty To Animals | Huntingtn BCH | 501(c)(3) | 1992 | $1.1 million | $6.1 million | 2024-12 |
| Pacific Animal Welfare Society | Coronado | 501(c)(3) | 2003 | $1.1 million | $3.8 million | 2024-12 |
| Vanderpump Dog Foundation | Los Angeles | 501(c)(3) | 2016 | $1.1 million | $430,232 | 2024-12 |
| Endangered Habitats League Inc | Los Angeles | 501(c)(3) | 1994 | $1.1 million | $1.2 million | 2025-12 |
| Care for Wild | Somis | 501(c)(3) | 2017 | $1.1 million | $310,068 | 2025-12 |
| Special Kay Rescue and Sanctuary Inc | Pasadena | 501(c)(3) | 2011 | $1.1 million | $805,080 | 2023-12 |
| Abandoned Cat Team | Stockton | 501(c)(3) | 2000 | $1.1 million | $265,362 | 2025-12 |
| Mohave Ground Squirrel Conservation Council | Redlands | 501(c)(3) | 2023 | $1.1 million | $280,267 | 2024-12 |
| Orange County Humane Society | Huntingtn BCH | 501(c)(3) | 1945 | $1.1 million | $1.3 million | 2025-06 |
| California Labradors Retrievers and More Rescue | Valley Center | 501(c)(3) | 2011 | $1.1 million | $567,204 | 2025-12 |
| Meoowzresq Inc | Orange | 501(c)(3) | 2009 | $1 million | $942,771 | 2025-12 |
| Friends of the Desert Mountains | Palm Desert | 501(c)(3) | 1987 | $1 million | $24.5 million | 2025-12 |
| State Humane Association of California | Penn Valley | 501(c)(3) | 1944 | $1 million | $960,330 | 2025-06 |
| Roar Foundation | Acton | 501(c)(3) | 1997 | $1 million | $1.2 million | 2025-06 |
| Wetlands and Wildlife Care Center | Huntingtn BCH | 501(c)(3) | 2004 | $1 million | $686,856 | 2024-12 |
| Shelter Transport Animal Rescue Team | Sherman Oaks | 501(c)(3) | 2012 | $1 million | $1.8 million | 2025-12 |
| Humboldt Humane | Fortuna | 501(c)(3) | 2022 | $1 million | $811,353 | 2025-12 |
| Calypso Equestrian | San Francisco | 501(c)(3) | 2018 | $1 million | $371,469 | 2025-12 |
| Hive Community Inc | Anaheim | 501(c)(3) | 2024 | $992,071 | $425,394 | 2025-12 |
| Yuba-Sutter Society for the Prevention of Cruelty To Animals | Yuba City | 501(c)(3) | 1994 | $991,501 | $1.9 million | 2025-12 |
| Animal Defenders International Us | Los Angeles | 501(c)(3) | 2005 | $986,350 | $3.8 million | 2025-12 |
| We Care Animal Rescue Inc | Saint Helena | 501(c)(3) | 1983 | $984,607 | $3.5 million | 2024-12 |
| Friends of Long Beach Animal Shelter | Long Beach | 501(c)(3) | 1994 | $974,137 | $1.5 million | 2025-06 |
| Southern California Golden Retriever Rescue | Los Angeles | 501(c)(3) | 2007 | $973,085 | $788,654 | 2025-12 |
| Doggie Protective Services for Homeless Tails | Palo Alto | 501(c)(3) | 2014 | $969,207 | $260,644 | 2025-12 |
| Lilys Legacy Senior Dog Sanctuary | Petaluma | 501(c)(3) | 2009 | $967,518 | $2.9 million | 2025-12 |
| Cache Creek Conservency | Woodland | 501(c)(3) | 1996 | $965,750 | $1.5 million | 2024-12 |
| Pug Nation Rescue of Los Angeles Inc | Carson | 501(c)(3) | 2011 | $965,517 | $1.8 million | 2024-12 |
| Border Horse Slaughter Rescue | Fiddletown | 501(c)(3) | 2021 | $963,990 | $196,348 | 2024-12 |
| Karma Cat Rescue | Mountain View | 501(c)(3) | 2015 | $958,069 | $453,248 | 2025-12 |
| Society for the Prevention of Cruelty To Animals of Solano Cnty | Vacaville | 501(c)(3) | 1981 | $955,836 | $393,119 | 2025-06 |
| Humane Education League Inc | Gardena | 501(c)(3) | 1948 | $953,180 | $1.2 million | 2025-10 |
| Elephant Aid International | Ojai | 501(c)(3) | 2011 | $939,269 | $7 million | 2025-12 |
| The Pug Queen Foundation Inc | Los Angeles | 501(c)(3) | 2019 | $936,223 | $886,542 | 2024-12 |
| Shadows Fund Incorporated | Lompoc | 501(c)(3) | 2010 | $933,172 | $883,393 | 2024-12 |
| Angel City Pit Bulls | Los Angeles | 501(c)(3) | 2011 | $919,716 | $743,646 | 2024-12 |
| Community Concern for Cats | Walnut Creek | 501(c)(3) | 2022 | $915,438 | $1.8 million | 2024-12 |
| Friends of San Francisco Animal Care and Control | San Francisco | 501(c)(3) | 2000 | $914,312 | $1.7 million | 2025-12 |
| Friends of Front Street Shelter | Sacramento | 501(c)(3) | 2001 | $907,550 | $1 million | 2025-12 |
| Amazing Dogs | San Ysidro | 501(c)(3) | 2022 | $906,253 | $15,616 | 2025-12 |
| New Beginnings for Merced County Animals Inc | Winton | 501(c)(3) | 2012 | $904,585 | $943,563 | 2025-12 |
| Mattole Salmon Group | Arcata | 501(c)(3) | 1983 | $895,414 | $445,624 | 2024-12 |
| House Rabbit Society | Richmond | 501(c)(3) | 1993 | $891,714 | $1.5 million | 2025-12 |
| Animals United Movement | Sebastopol | 501(c)(3) | 2014 | $876,072 | $1.2 million | 2024-12 |
| Ark Antiques | La Jolla | 501(c)(3) | 2002 | $871,252 | $229,217 | 2025-12 |
| Migramar | Bodega Bay | 501(c)(3) | 2018 | $867,501 | $2 million | 2024-12 |
| Happy Tails Pet Sanctuary | Sacramento | 501(c)(3) | 1994 | $858,151 | $2.4 million | 2024-12 |
| Animal Action League | Joshua Tree | 501(c)(3) | 1994 | $845,488 | $403,729 | 2024-12 |
| Retrievers and Friends of Southern California Inc | Temecula | 501(c)(3) | 2009 | $842,263 | $1.5 million | 2024-12 |
| Second Chance Cocker Rescue Inc | Twain Harte | 501(c)(3) | 2003 | $835,752 | $436,380 | 2025-12 |
| Sequoia Humane Society | Eureka | 501(c)(3) | 1971 | $833,286 | $806,288 | 2025-12 |
| Mendocino Coast Humane Society | Fort Bragg | 501(c)(3) | 1991 | $831,611 | $1.2 million | 2025-06 |
| Earth League International | Los Angeles | 501(c)(3) | 2014 | $829,521 | $1.2 million | 2025-12 |
| Animal Shelter To Riverbank Oakdale Foundation | Oakdale | 501(c)(3) | 2013 | $818,184 | $1 million | 2025-12 |
| Lovejoy Foundation Inc | Inglewood | 501(c)(3) | 2019 | $812,380 | $67,596 | 2025-12 |
| Biocomplexity Survival Alliance | Scotts Valley | 501(c)(3) | 2024 | $807,907 | $569,554 | 2025-12 |
| San Diego Companion Rabbit Society Inc | San Diego | 501(c)(3) | 2007 | $803,435 | $1.2 million | 2025-12 |
| Feral Cat Coalition | San Diego | 501(c)(3) | 1993 | $796,053 | $1.1 million | 2025-08 |
| Downtown Dog Rescue | Pasadena | 501(c)(3) | 2014 | $787,628 | $1.3 million | 2025-12 |
| Jellys Place | San Pablo | 501(c)(3) | 2017 | $785,150 | $272,192 | 2024-12 |
| United Pegasus Foundation | Tehachapi | 501(c)(3) | 1994 | $781,187 | $1.8 million | 2025-12 |
| Cats of San Bernardino | SN Bernrdno | 501(c)(3) | 2023 | $775,408 | $1.3 million | 2024-12 |
| Humboldt Spay Neuter Network | Eureka | 501(c)(3) | 2004 | $772,424 | $1 million | 2025-12 |
| William Holden Wildlife Foundation | Beverly Hills | 501(c)(3) | 1982 | $770,795 | $10.9 million | 2025-06 |
| Ace of Hearts Dog Rescue | Beverly Hills | 501(c)(3) | 2001 | $763,748 | $7,944 | 2025-12 |
| Dogs for Diabetics | Concord | 501(c)(3) | 2005 | $756,737 | $1.3 million | 2025-06 |
| Friends of Madera Animal Shelter | Madera | 501(c)(3) | 2002 | $755,535 | $391,428 | 2025-12 |
| Central Coast Salmon Enhancement | Arroyo Grande | 501(c)(3) | 1986 | $755,047 | $400,939 | 2025-12 |
| Norcal Golden Retriever Rescue Inc | Menlo Park | 501(c)(3) | 1996 | $753,523 | $4.8 million | 2024-12 |
| Friends of Watsonville Animal Shelter | Freedom | 501(c)(3) | 2003 | $750,823 | $962,390 | 2025-06 |
| Healthcare for Homeless Animals | Thousand Oaks | 501(c)(3) | 1998 | $740,973 | $1.1 million | 2025-12 |
| A Purposeful Rescue Inc | Los Angeles | 501(c)(3) | 2019 | $738,862 | $1.3 million | 2025-12 |
| Resqcats Inc | Santa Barbara | 501(c)(3) | 1997 | $732,731 | $1.7 million | 2025-12 |
| Mountain Lion Foundation | Sacramento | 501(c)(3) | 1986 | $725,489 | $2.4 million | 2025-06 |
| Friends of the Palo Alto Jr Museum and Zoo | Palo Alto | 501(c)(3) | 1996 | $722,541 | $4.5 million | 2025-06 |
| Sononia Savanna Youth Foundation | Santa Rosa | 501(c)(3) | 1998 | $715,368 | $669,587 | 2024-12 |
| The Rescue Train | North Hollywood | 501(c)(3) | 2005 | $714,312 | $966,403 | 2025-12 |
| Catcafe Lounge | Marina DL Rey | 501(c)(3) | 2016 | $713,993 | $460,618 | 2025-12 |
| Baby Rhino Rescue | Topanga | 501(c)(3) | 2015 | $711,929 | $233,883 | 2024-12 |
| Paso Pacifico | Ventura | 501(c)(3) | 2006 | $705,401 | $381,131 | 2024-12 |
| Promise 4 Paws | Dana Point | 501(c)(3) | 2014 | $700,779 | $418,803 | 2025-12 |
| Native Animal Rescue | Santa Cruz | 501(c)(3) | 1981 | $693,716 | $2 million | 2025-12 |
| California Dressage Society | Carmel Valley | 501(c)(3) | 1998 | $691,563 | $2 million | 2025-12 |
| Friends of the Animal Community | Sonora | 501(c)(3) | 2001 | $690,581 | $1.3 million | 2024-12 |
| Milos Sanctuary and Special Needs Cat Rescue Inc | Palmdale | 501(c)(3) | 2005 | $684,756 | $10,293 | 2025-12 |
| Los Angeles Pet Rescue | Chatsworth | 501(c)(3) | 2010 | $682,052 | $807,209 | 2024-12 |
| The Drake Gives | Laguna Beach | 501(c)(3) | 2020 | $681,832 | $423,834 | 2025-12 |
| Doberman Pincher Rescue | Fillmore | 501(c)(3) | 1994 | $676,731 | $465,035 | 2024-12 |
| Little Red Dog Inc | Lake Forest | 501(c)(3) | 2012 | $676,121 | $15,573 | 2024-12 |
| Animal Protection League | Stockton | 501(c)(3) | 1994 | $674,454 | $1.8 million | 2024-12 |
| Animal Compassion Team of California | Fresno | 501(c)(3) | 2010 | $674,186 | $1.7 million | 2025-12 |
| Jaws & Paws Inc | Pilot Hill | 501(c)(3) | 2024 | $673,621 | $829,975 | 2025-12 |
| Sunrise Horse Rescue | Saint Helena | 501(c)(3) | 2009 | $672,678 | $627,510 | 2025-12 |
| Unconditional Inc | Laguna Beach | 501(c)(3) | 2019 | $671,827 | $1.3 million | 2024-12 |
| Forpaws Spay & Neuter Clinic | Fremont | 501(c)(3) | 2005 | $658,996 | $421,412 | 2025-12 |
| Saveabunny Inc | Mill Valley | 501(c)(3) | 2009 | $657,082 | $710,979 | 2024-12 |
| Animalsave | Grass Valley | 501(c)(3) | 1975 | $656,321 | $1.7 million | 2024-12 |
| Apex Protection Project | Palmdale | 501(c)(3) | 2015 | $652,214 | $880,360 | 2025-09 |
| Southern California Bulldog Rescueinc | Santa Ana | 501(c)(3) | 2007 | $648,060 | $353,337 | 2024-12 |
| Pup Culture Rescue | Los Angeles | 501(c)(3) | 2021 | $644,432 | $93,902 | 2025-12 |
| Felidae Conservation Fund | Mill Valley | 501(c)(3) | 2006 | $642,938 | $923,061 | 2025-06 |
| I Stand With My Pack Inc | Culver City | 501(c)(3) | 2017 | $642,451 | $110,689 | 2024-12 |
| The Ark of San Juan Companion Animal Rescue | San Juan Capo | 501(c)(3) | 2008 | $642,268 | $543,451 | 2025-12 |
| Monterey Bay Fisheries Trust | Santa Cruz | 501(c)(3) | 2015 | $639,323 | $1.7 million | 2025-12 |
| Sage Compassion for Animals | Mountain View | 501(c)(3) | 2020 | $636,827 | $346,789 | 2025-12 |
| Santa Cruz Co Animal Shelter Foundation | Santa Cruz | 501(c)(3) | 2003 | $634,314 | $2.2 million | 2025-12 |
| Friends of Normie | Newport Beach | 501(c)(3) | 2023 | $634,148 | $391,533 | 2025-12 |
| Duo Duo Animal Welfare Project Inc | Sunnyvale | 501(c)(3) | 2014 | $632,334 | $23,032 | 2025-12 |
| Mickaboo Companion Bird Rescue | San Jose | 501(c)(3) | 1998 | $632,260 | $953,049 | 2025-06 |
| Southern California Pomeranian Rescue Inc | Irvine | 501(c)(3) | 2020 | $628,571 | $525,063 | 2024-12 |
| Canyonside Equestrian Center Inc | San Diego | 501(c)(3) | 2024 | $625,703 | $64,032 | 2025-12 |
| Rising Phoenix Conservation Inc | Sausalito | 501(c)(3) | 2019 | $624,340 | $213,268 | 2024-12 |
| Sweet Angel Dog Rescue Corporation | Tarzana | 501(c)(3) | 2024 | $623,547 | $34,358 | 2025-12 |
| Animal Advocacy Careers | Anaheim | 501(c)(3) | 2021 | $623,496 | $573,099 | 2024-12 |
| Mutt Scouts | San Diego | 501(c)(3) | 2024 | $618,657 | $106,187 | 2024-12 |
| Vin Foundation | Davis | 501(c)(3) | 2011 | $617,653 | $832,087 | 2024-12 |
| B Bryan Preserve Wildlife Foundation | Point Arena | 501(c)(3) | 2020 | $616,654 | $46,153 | 2024-12 |
| Humane Society for Inland Mendocino County | Redwood Vly | 501(c)(3) | 1980 | $616,266 | $1.5 million | 2024-12 |
| Yucaipa Valley Animal Placement Society | Yucaipa | 501(c)(3) | 1974 | $610,603 | $464,665 | 2025-06 |
| Pawsitive Beginnings | Los Angeles | 501(c)(3) | 2023 | $598,484 | $3.3 million | 2024-12 |
| All About Equine Animal Rescue | El Dorado HLS | 501(c)(3) | 2010 | $598,357 | $1.8 million | 2024-12 |
| Helen Sanders Cat Protection and Welfare Society | Seal Beach | 501(c)(3) | 2010 | $595,848 | $898,007 | 2025-12 |
| Calaveras Humane Society | Altaville | 501(c)(3) | 1979 | $590,611 | $1.2 million | 2025-06 |
| Fat Kitty City Humane Society | El Dorado HLS | 501(c)(3) | 2019 | $589,296 | $861,356 | 2024-12 |
| Dolphin Foundation Inc | Dana Point | 501(c)(3) | 1996 | $588,556 | $85,419 | 2025-08 |
| Lanta Animal Welfare | Temecula | 501(c)(3) | 2013 | $587,336 | $172,053 | 2025-12 |
| Siskiyou Humane Society Inc | Mount Shasta | 501(c)(3) | 1977 | $586,858 | $1.5 million | 2025-12 |
| Companion Animal Protection Society | Thousand Oaks | 501(c)(3) | 1993 | $582,314 | $1.3 million | 2025-12 |
| Contra Costa Humane Society | Pleasant Hill | 501(c)(3) | 1997 | $580,445 | $1.7 million | 2025-12 |
| Persian and Himalayan Cat Rescue | San Francisco | 501(c)(3) | 2000 | $572,757 | $618,938 | 2024-12 |
| Humane Society of the Desert Orphan Pet Oasis | Chino Hills | 501(c)(3) | 1961 | $567,967 | $502,728 | 2025-06 |
| California Coastal Horse Rescue | Ojai | 501(c)(3) | 2002 | $567,827 | $1.7 million | 2025-12 |
| The Cesar Millan Foundation | Beverly Hills | 501(c)(3) | 2007 | $567,145 | $2.2 million | 2024-12 |
| Jindo Love Rescue | San Diego | 501(c)(3) | 2019 | $565,866 | $500,119 | 2024-12 |
| Stand Up for Pits Foundation Inc | W Hollywood | 501(c)(3) | 2014 | $562,517 | $818,057 | 2024-12 |
| Little Lion Foundation | Long Beach | 501(c)(3) | 2016 | $562,073 | $60,531 | 2025-05 |
| Fallbrook Animal Sanctuary | Fallbrook | 501(c)(3) | 2008 | $561,962 | $855,892 | 2025-12 |
| Take Me Home | Santa Monica | 501(c)(3) | 2001 | $560,997 | $2.7 million | 2024-12 |
| Foster Army Animal Rescue | Riverside | 501(c)(3) | 2016 | $559,474 | $566,095 | 2025-12 |
| Rescue House Inc | Encinitas | 501(c)(3) | 2019 | $556,905 | $401,183 | 2025-12 |
| Pet Los Cabos | RCH Palos VRD | 501(c)(3) | 2023 | $555,219 | $410,861 | 2025-12 |
| Hanaeleh | Trabuco Cyn | 501(c)(3) | 2006 | $554,867 | $531,661 | 2025-12 |
| Wildlife Madagascar | San Diego | 501(c)(3) | 2023 | $552,577 | $255,485 | 2024-12 |
| Sunny Day Acres Inc | Santa Clarita | 501(c)(3) | 2019 | $551,807 | $311,807 | 2025-12 |
| Doggy Hydeaway Rescue Rehab Inc | Valley Center | 501(c)(3) | 2014 | $550,000 | $497,350 | 2024-12 |
| Gunthers Family | S Pasadena | 501(c)(3) | 2022 | $547,129 | $187,061 | 2024-12 |
| Conservation Earth Inc | Half Moon Bay | 501(c)(3) | 1984 | $546,880 | $1.7 million | 2024-08 |
| Rory To the Rescue | Porter Ranch | 501(c)(3) | 2023 | $546,036 | $245,845 | 2025-12 |
| Tony Fitzjohn-George Adamson African Wildlife Presrvtion Trust Inc | Malibu | 501(c)(3) | 1984 | $539,212 | $1.5 million | 2024-12 |
| Wild Horizons Wildlife Orphanage and Sanctuary | San Diego | 501(c)(3) | 2011 | $534,814 | $547,205 | 2025-12 |
| A Way Home for Dogs Inc | Bonita | 501(c)(3) | 2021 | $533,781 | $483,280 | 2025-12 |
| Social Compassion in Legislation | Laguna Beach | 501(c)(4) | 2008 | $533,297 | $929,542 | 2025-12 |
| Primates Peru | Escondido | 501(c)(3) | 2014 | $531,840 | $240,542 | 2025-09 |
| Sacramento Valley Ecological Restoration Foundation | Woodland | 501(c)(3) | 2019 | $528,271 | $415,239 | 2025-12 |
| People and Cats Together Inc | Redondo Beach | 501(c)(3) | 2002 | $527,160 | $491,603 | 2026-02 |
| Kinder4horses Rescue | Studio City | 501(c)(3) | 2022 | $526,950 | $120,381 | 2025-12 |
| Golden Gate Basset Rescue Inc | Petaluma | 501(c)(3) | 2005 | $525,294 | $1.2 million | 2025-12 |
| Maison Sure Foundation | Los Angeles | 501(c)(3) | 2023 | $523,527 | $383,544 | 2024-12 |
| Palo Alto Humane Society | Palo Alto | 501(c)(3) | 1953 | $522,954 | $2.9 million | 2024-12 |
| Dharma Rescue for Cats and Dogs | Gardena | 501(c)(3) | 2008 | $520,438 | $15,189 | 2025-12 |
| Homeless Cat Network | San Carlos | 501(c)(3) | 1993 | $520,001 | $5.1 million | 2024-12 |
| Pet Rescue Association | Los Angeles | 501(c)(3) | 1980 | $518,080 | $542,382 | 2025-06 |
| Animal Protection Agency | Santa Clarita | 501(c)(3) | 2018 | $517,985 | $242,497 | 2025-12 |
| Hearts Landing Ranch | Granite Bay | 501(c)(3) | 2018 | $514,790 | $380,637 | 2025-06 |
| Shirley Perry Foundation | Brentwood | 501(c)(3) | 2009 | $514,181 | $7.8 million | 2025-12 |
| Pets & Pals | Stockton | 501(c)(3) | 1950 | $512,671 | $3.5 million | 2025-09 |
| Australian Shepherds Furever Corporation | RCH Cucamonga | 501(c)(3) | 2014 | $508,617 | $93,213 | 2024-12 |
| Vegan Friendly | Santa Monica | 501(c)(3) | 2024 | $505,071 | $111,012 | 2024-12 |
| Animal Rescue Mission | W Hollywood | 501(c)(3) | 2016 | $503,607 | $689,776 | 2024-12 |
| Big Heart Ranch | Malibu | 501(c)(3) | 2023 | $500,380 | $172,792 | 2025-12 |
| Labrador Rescuers | San Diego | 501(c)(3) | 2004 | $497,960 | $711,006 | 2025-12 |
| Direct Action Everywhere | Berkeley | 501(c)(3) | 2017 | $493,717 | $302,419 | 2024-12 |
| Ohlone Humane Society Inc | Fremont | 501(c)(3) | 1983 | $493,590 | $1.2 million | 2025-12 |
| Heart Healthcare & Emergency Animal Rescue Team | Yorba Linda | 501(c)(3) | 2012 | $481,796 | $158,011 | 2024-12 |
| Jameson Animal Rescue Ranch | Saint Helena | 501(c)(3) | 2014 | $481,544 | $1.1 million | 2025-12 |
| Thrive Animal Rescue Inc | San Diego | 501(c)(3) | 2014 | $475,412 | $1.2 million | 2025-12 |
| Pedro Pet Pals Inc | San Pedro | 501(c)(3) | 2009 | $475,335 | $1.4 million | 2024-12 |
| Forgotten Dog Foundation | Santa Monica | 501(c)(3) | 2010 | $474,896 | $108,711 | 2025-12 |
| Horses Honor | Lincoln | 501(c)(3) | 2003 | $474,317 | $424,417 | 2025-12 |
| Pretty Good Cat | Orange | 501(c)(3) | 2011 | $473,798 | $1.2 million | 2025-12 |
| Wild Blue Dogs Inc | Seal Beach | 501(c)(3) | 2017 | $473,550 | $265,515 | 2024-12 |
| Mirandas Rescue | Fortuna | 501(c)(3) | 1999 | $471,080 | $451,019 | 2024-12 |
| Jasper Ridge Farm | Woodside | 501(c)(3) | 2010 | $468,506 | $1.1 million | 2025-12 |
| California Veterinary Medical Foundation | Sacramento | 501(c)(3) | 1995 | $466,829 | $1.1 million | 2025-12 |
| Animal Charities of America | San Rafael | 501(c)(3) | 1998 | $466,639 | $551,977 | 2026-04 |
| Kittyland Cat and Kitten Rescue Inc | Palm Springs | 501(c)(3) | 2015 | $464,670 | $769,682 | 2024-12 |
| Horses of Tir NA Nog | San Diego | 501(c)(3) | 2007 | $461,406 | $45,586 | 2025-12 |
| Redwood Coast Humane Society | Gualala | 501(c)(3) | 2000 | $459,422 | $968,957 | 2025-12 |
| Sante Dor Foundation | Los Angeles | 501(c)(3) | 2004 | $458,631 | $539,463 | 2026-02 |
| Center for Animal Protection and Education | Grass Valley | 501(c)(3) | 1994 | $458,599 | $2 million | 2025-12 |
| Animal Tracks | Agua Dulce | 501(c)(3) | 2002 | $454,131 | $14,954 | 2025-12 |
| Companion Animal Welfare Alliance | Chico | 501(c)(3) | 2013 | $453,754 | $295,750 | 2024-12 |
| Desert Tortoise Preserve Committee Inc | Ridgecrest | 501(c)(3) | 1975 | $452,916 | $18.9 million | 2024-12 |
| Bear League | Homewood | 501(c)(3) | 2001 | $451,002 | $3.8 million | 2025-06 |
| Cat Lounge Rescue and Adoption Center | La Jolla | 501(c)(3) | 2019 | $450,974 | $40,195 | 2025-12 |
| Linda Blair-Worldheart Foundation | Burbank | 501(c)(3) | 2004 | $450,041 | $20,918 | 2024-08 |
| Far Side Journey Incorporated | Yucca Valley | 501(c)(3) | 2018 | $446,268 | $42,226 | 2025-12 |
| Golden Empire Basset Rescue | Citrus HTS | 501(c)(3) | 2007 | $445,051 | $175,768 | 2025-12 |
| Lionel S Legacy Inc | El Cajon | 501(c)(3) | 2013 | $444,394 | $368,138 | 2025-12 |
| Citizens for Los Angeles Wildlife Inc | Studio City | 501(c)(3) | 2014 | $443,485 | $445,501 | 2024-12 |
| Dogs Without Borders | Encino | 501(c)(3) | 2006 | $438,799 | $65,341 | 2025-12 |
| Animal Hope and Wellness Foundation | Sherman Oaks | 501(c)(3) | 2014 | $436,500 | $80,416 | 2022-12 |
| Unchainedtv | Marina Del Rey | 501(c)(3) | 2018 | $435,334 | $257,341 | 2025-12 |
| Animal Rescue Squad International II | Davis | 501(c)(3) | 2021 | $434,957 | $5,895 | 2024-12 |
| Saving Gizmos Friends | Thousand Oaks | 501(c)(3) | 2014 | $434,646 | $139,742 | 2025-04 |
| Town Cats of Morgan Hill | Morgan Hill | 501(c)(3) | 1998 | $433,939 | $463,923 | 2025-12 |
| Rangeland Wild | Laguna Niguel | 501(c)(3) | 2021 | $430,576 | $111,330 | 2024-12 |
| Free Flight | Del Mar | 501(c)(3) | 2009 | $428,699 | $495,568 | 2025-12 |
| North Valley Animal Disaster Group | Chico | 501(c)(3) | 2004 | $427,612 | $4.8 million | 2025-12 |
| Bighorn Institute | Palm Desert | 501(c)(3) | 1982 | $426,005 | $2.7 million | 2025-12 |
| VFW Department of California Foundation | Elk Grove | 501(c)(3) | 2004 | $424,430 | $1.8 million | 2025-06 |
| Free Animal Doctor Inc | Sierra Madre | 501(c)(3) | 2015 | $424,083 | $338,149 | 2024-12 |
| Furever Family | Rcho Sta Marg | 501(c)(3) | 2024 | $423,603 | $37,940 | 2025-12 |
| Morongo Basin Humane Society Incorporated | Joshua Tree | 501(c)(3) | 1975 | $422,363 | $1.1 million | 2025-12 |
| Fosters & Paws | Rio Linda | 501(c)(3) | 2013 | $422,004 | $25,267 | 2025-12 |
| Farm Animal Refuge | Campo | 501(c)(3) | 2016 | $421,099 | $418,744 | 2025-12 |
| Bird Ally X | Arcata | 501(c)(3) | 2012 | $419,178 | $338,083 | 2024-12 |
| Amore for Dogs | Huntingtn BCH | 501(c)(3) | 2014 | $418,604 | $1.4 million | 2024-12 |
| Mzuri Wildlife Club Foundation | Greenbrae | 501(c)(3) | 2016 | $417,839 | $2.9 million | 2024-12 |
| Delta Stockton Humane Society & Society for Prevention of Cruelty | Stockton | 501(c)(3) | 2024 | $414,769 | $500,580 | 2026-03 |
| Voice for Asian Elephants Society | Palo Alto | 501(c)(3) | 2016 | $414,643 | $194,084 | 2025-12 |
| Humane Society of Tuolumne County Incorporated | Jamestown | 501(c)(3) | 1977 | $414,268 | $2.5 million | 2025-06 |
| Green Dog Foundation | Lake Elsinore | 501(c)(3) | 2011 | $412,521 | $241,645 | 2025-12 |
| Conservation Ambassadors Inc | Paso Robles | 501(c)(3) | 2024 | $407,243 | $378,748 | 2021-04 |
| Calpaws K-9 Rescue | Pioneer | 501(c)(3) | 2019 | $405,138 | $77,598 | 2023-12 |
| Puppies & Golf Inc | Sacramento | 501(c)(3) | 2021 | $399,492 | $116,784 | 2024-12 |
| Spayce Project | Los Angeles | 501(c)(3) | 2024 | $399,386 | $77,248 | 2025-12 |
| Bay Area Cats | Cupertino | 501(c)(3) | 2022 | $398,834 | $115,602 | 2025-12 |
| Tiny Paws Pug Rescue | Aptos | 501(c)(3) | 2021 | $398,733 | $50,535 | 2025-12 |
| Amargosa Land Trust | Shoshone | 501(c)(3) | 2005 | $396,258 | $675,877 | 2025-12 |
| Legacy of Love 805 | Ventura | 501(c)(3) | 2025 | $396,176 | $5,874 | 2025-12 |
| Ghetto Rescue Ffoundation | Anaheim | 501(c)(3) | 2012 | $394,625 | $46,497 | 2024-12 |
| Loves Legacy | Novato | 501(c)(3) | 2024 | $393,791 | $53,333 | 2025-12 |
| Wild at Heart Horse Rescue | Lancaster | 501(c)(3) | 2017 | $393,791 | $104,170 | 2024-12 |
| Wee Companions | Imperial BCH | 501(c)(3) | 2003 | $391,299 | $153,392 | 2024-12 |
| Neigh Savers Foundation Inc | Walnut Creek | 501(c)(3) | 2007 | $386,919 | $376,415 | 2025-12 |
| Love This Horse Equine Rescue | Mojave | 501(c)(3) | 2016 | $386,554 | $59,793 | 2025-12 |
| Avian Behavior Conservancy | Escondido | 501(c)(3) | 2025 | $386,524 | $316,556 | 2025-12 |
| Sale Ranch Sanctuary | Temecula | 501(c)(3) | 2016 | $386,448 | $591,224 | 2025-12 |
| Noahs Ark Animal Haven and Rescue | Lakehead | 501(c)(3) | 2020 | $384,051 | $23,464 | 2025-12 |
| Golden Oldies Cat Rescue | Monterey | 501(c)(3) | 2016 | $382,807 | $809,279 | 2025-12 |
| W E R C | Morgan Hill | 501(c)(3) | 1993 | $382,160 | $228,598 | 2025-12 |
| Animal Friends Connection | Lodi | 501(c)(3) | 1994 | $381,760 | $750,850 | 2025-06 |
| Animal Basic Care Network | Grand Terrace | 501(c)(3) | 2018 | $381,679 | $37,315 | 2024-12 |
| Association for Parrot Care Conservation Adoptions Rescue | Frazier Park | 501(c)(3) | 2003 | $380,588 | $1.9 million | 2025-12 |
| Heart of the Horse Therapy Ranch | Clovis | 501(c)(3) | 2012 | $379,198 | $575,819 | 2025-12 |
| Labradors and Friends Dog Rescue Group Inc | San Diego | 501(c)(3) | 2007 | $379,136 | $71,373 | 2025-12 |
| Luckys Crew Animal Rescue | Bakersfield | 501(c)(3) | 2021 | $378,310 | $196,416 | 2025-12 |
| Compassionate Animal Rescue for Medical Aid Inc | Mission Viejo | 501(c)(3) | 2012 | $378,193 | $154,967 | 2025-12 |
| Doggie Bonez Inc | San Juan Capo | 501(c)(3) | 2019 | $377,168 | $521 | 2024-12 |
| Trunks & Leaves Inc | San Diego | 501(c)(3) | 2012 | $375,048 | $356,200 | 2025-12 |
| A New Life Charitable Foundation Inc | San Diego | 501(c)(3) | 2019 | $374,985 | $152,699 | 2025-06 |
| Sweetbeau Horses | Woodside | 501(c)(3) | 2018 | $374,070 | $162,908 | 2024-12 |
| Win Place Home Inc | Canyon Country | 501(c)(3) | 2016 | $373,163 | $98,646 | 2025-12 |
| Labrador Retriever Rescue of Fresno Inc | Clovis | 501(c)(3) | 2011 | $371,676 | $707,421 | 2025-12 |
| Are Animal Rescue Inc | Hemet | 501(c)(3) | 2018 | $371,224 | $200,668 | 2024-12 |
| The Santa Barbara Bird Sanctuary | Summerland | 501(c)(3) | 1993 | $371,206 | $473,514 | 2024-12 |
| Working Dogs for Warriors Corp | Rialto | 501(c)(3) | 2017 | $371,187 | $61,020 | 2023-12 |
| Rancho Compasion | Nicasio | 501(c)(3) | 2016 | $371,176 | $160,381 | 2024-12 |
| Golden Gate Labrador Retriever Rescue Inc | Novato | 501(c)(3) | 2001 | $370,242 | $1.8 million | 2025-12 |
| Feral Cat Foundation | Alamo | 501(c)(3) | 1998 | $368,790 | $237,428 | 2025-12 |
| West Los Angeles Obedience Training Club | Los Angeles | 501(c)(3) | 2014 | $368,712 | $273,337 | 2024-12 |
| Safe Worldwide Inc | Monte Sereno | 501(c)(3) | 2017 | $368,420 | $62,725 | 2026-06 |
| German Shepherd Rescue of Northern California | Cupertino | 501(c)(3) | 2001 | $367,813 | $1.2 million | 2025-12 |
| Life Source Training Institute Inc | Riverside | 501(c)(3) | 2012 | $366,890 | $81,889 | 2024-12 |
| Underdog Animal Rescue | Lafayette | 501(c)(3) | 2014 | $366,186 | $996,654 | 2025-12 |
| Dharamsala Animal Rescue | Encinitas | 501(c)(3) | 2008 | $365,709 | $98,794 | 2025-12 |
| International Paw Angels | San Francisco | 501(c)(3) | 2020 | $364,839 | $7,856 | 2024-12 |
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.