Animal-Related nonprofits

15,994 organizations, from IRS Form 990 filings and other public records.

Combined revenue $16.6B. Median revenue $124k — half of these organizations are smaller than that. Combined assets $40.8B.

Largest by revenue

Ranked on reported total revenue, not on any Helpfund score.

1. NATIONAL FISH AND WILDLIFE FOUNDATION — Washington, DC — $513.2M (FY2023)

2. ZOOLOGICAL SOCIETY OF SAN DIEGO — San Diego, CA — $437.6M (FY2024)

3. ASPCA — New York, NY — $379.3M (FY2023)

4. Wildlife Conservation Society — Bronx, NY — $345.5M (FY2022)

5. MONTEREY BAY AQUARIUM FOUNDATION — Monterey, CA — $208.1M (FY2024)

6. The Humane Society of the United States — Washington, DC — $207.9M (FY2024)

7. JOHNNY MORRIS' OZARKS HERITAGE PRESERVE — Springfield, MO — $168.0M (FY2024)

8. GEORGIA AQUARIUM INC & SUBSIDIARY — Atlanta, GA — $165.7M (FY2024)

9. Ahimsa Foundation — Niwot, CO — $160.2M (FY2024)

10. NATIONAL WILDLIFE FEDERATION — Reston, VA — $156.4M (FY2023)

11. BEST FRIENDS ANIMAL SOCIETY — Kanab, UT — $148.3M (FY2023)

12. MASSACHUSETTS SOCIETY FOR THE PREVENTION — Boston, MA — $144.8M (FY2024)

13. Chicago Zoological Society — Brookfield, IL — $108.0M (FY2024)

14. SHEDD AQUARIUM SOCIETY — Chicago, IL — $102.0M (FY2024)

15. ROCKY MOUNTAIN ELK FOUNDATION INC — Missoula, MT — $100.1M (FY2024)

16. AMERICAN KENNEL CLUB INC — New York, NY — $99.6M (FY2024)

17. THE ANIMAL MEDICAL CENTER — New York, NY — $96.7M (FY2024)

18. DENVER DUMB FRIENDS LEAGUE — Denver, CO — $92.9M (FY2024)

19. COLUMBUS ZOOLOGICAL PARK ASSOCIATION — Powell, OH — $88.8M (FY2024)

20. WOODLAND PARK ZOOLOGICAL SOCIETY — Seattle, WA — $83.7M (FY2024)

21. TROUT UNLIMITED INC — Arlington, VA — $83.5M (FY2023)

22. Houston Zoo Inc — Houston, TX — $82.7M (FY2024)

23. OMAHA ZOOLOGICAL SOCIETY — Omaha, NE — $82.0M (FY2024)

24. PEOPLE FOR THE ETHICAL TREATMENT — Norfolk, VA — $77.2M (FY2023)

25. GREAT LAKES FISHERY COMMISSION — Ann Arbor, MI — $75.6M (FY2023)

26. NATIONAL AQUARIUM INC — Baltimore, MD — $74.4M (FY2024)

27. REWILD — Austin, TX — $74.2M (FY2023)

28. SAN DIEGO HUMANE SOCIETY & SPCA — San Diego, CA — $72.9M (FY2023)

29. ZOOLOGICAL SOCIETY OF CINCINNATI — Cincinnati, OH — $69.4M (FY2024)

30. PETSMART CHARITIES INC — Phoenix, AZ — $68.7M (FY2024)

31. GOVERNORS ISLAND CORPORATION — New York, NY — $66.1M (FY2023)

32. DETROIT ZOOLOGICAL SOCIETY — Royal Oak, MI — $64.1M (FY2024)

33. Audubon Nature Institute Inc — New Orleans, LA — $61.3M (FY2024)

34. SAN ANTONIO ZOOLOGICAL SOCIETY — San Antonio, TX — $61.1M (FY2024)

35. DENVER ZOOLOGICAL FOUNDATION — Denver, CO — $60.1M (FY2024)

36. AQUARIUM OF THE PACIFIC CORPORATION — Long Beach, CA — $59.3M (FY2024)

37. THE SAINT LOUIS ZOO ASSOCIATION — St. Louis, MO — $58.5M (FY2024)

38. Indianapolis Zoological Society Inc — Indianapolis, IN — $57.7M (FY2024)

39. LINCOLN PARK ZOOLOGICAL SOCIETY — Chicago, IL — $56.4M (FY2023)

40. NEW ENGLAND AQUARIUM CORPORATION — Boston, MA — $54.6M (FY2024)

41. THE SEATTLE AQUARIUM SOCIETY — Seattle, WA — $54.1M (FY2024)

42. FRIENDS OF THE ZOO INC OF KANSAS CITY — Kansas City, MO — $53.6M (FY2024)

43. FORT WORTH ZOOLOGICAL ASSOCIATION INC — Fort Worth, TX — $52.8M (FY2023)

44. WILDLIFE CONSERVATION NETWORK INC — San Francisco, CA — $52.5M (FY2023)

45. Arizona Humane Society — Phoenix, AZ — $52.2M (FY2023)

46. THE TOLEDO ZOOLOGICAL SOCIETY — Toledo, OH — $50.0M (FY2024)

47. Lowry Park Zoological Society of Tampa — Tampa, FL — $48.6M (FY2023)

48. PAWS CHICAGO — Chicago, IL — $47.0M (FY2024)

49. ARIZONA CENTER FOR NATURE CONSERVATION — Phoenix, AZ — $46.7M (FY2022)

50. NORTH SHORE ANIMAL LEAGUE AMERICA — Port Washington, NY — $46.4M (FY2024)

51. THE SAN FRANCISCO SOCIETY FOR THE — San Francisco, CA — $46.0M (FY2023)

52. Animal Relief Network — Austin, TX — $45.8M (FY2025)

53. CENTER FOR BIOLOGICAL DIVERSITY INC — Tucson, AZ — $45.7M (FY2024)

54. ZOOLOGICAL SOCIETY OF PHILADELPHIA — Philadelphia, PA — $43.7M (FY2024)

55. CHEYENNE MOUNTAIN ZOOLOGIAL SOCIETY — Colorado Springs, CO — $42.8M (FY2024)

56. BIRDLIFE INTERNATIONAL — Cambridge — $41.3M (FY2024)

57. The Florida Aquarium Inc — Tampa, FL — $40.6M (FY2023)

58. JACKSONVILLE ZOOLOGICAL SOCIETY INC — Jacksonville, FL — $39.3M (FY2023)

59. AFRICAN WILDLIFE FOUNDATION INC — Washington, DC — $38.6M (FY2023)

60. JOHN BALL ZOO — Grand Rapids, MI — $37.3M (FY2024)

61. MAUI HUMANE SOCIETY — Puunene, HI — $37.2M (FY2023)

62. INTERNATIONAL FUND FOR ANIMAL WELFARE INC — Washington, DC — $36.5M (FY2023)

63. THE WILD ANIMAL SANCTUARY — Keenesburg, CO — $36.4M (FY2024)

64. Defenders of Wildlife — Washington, DC — $36.1M (FY2023)

65. DOVE LEWIS EMERGENCY ANIMAL HOSPITAL INC — Portland, OR — $36.0M (FY2024)

66. NASHVILLE ZOO INC — Nashville, TN — $35.9M (FY2024)

67. Karuna Foundation — Niwot, CO — $35.4M (FY2024)

68. Humane Society International — Washington, DC — $35.1M (FY2024)

69. DALLAS ZOO MANAGEMENT INC — Dallas, TX — $34.1M (FY2023)

70. ATLANTA FULTON COUNTY ZOO INC — Atlanta, GA — $34.1M (FY2024)

71. SEA RESEARCH FOUNDATION INC — Mystic, CT — $31.8M (FY2024)

72. POINT REYES BIRD OBSERVATORY — Petaluma, CA — $31.7M (FY2024)

73. CONSERVATION SOCIETY OF CALIFORNIA — Oakland, CA — $31.5M (FY2023)

74. Tennessee Aquarium — Chattanooga, TN — $31.5M (FY2023)

75. EAST COAST ZOOLOGICAL — Melbourne, FL — $30.8M (FY2024)

76. NEW ENGLAND WILDLIFE CENTER INC — South Weymouth, MA — $30.8M (FY2024)

77. JANE GOODALL INSTITUTE FOR WILDLIFE — Washington, DC — $30.6M (FY2024)

78. ZOOLOGICAL SOCIETY OF PITTSBURGH — Pittsburgh, PA — $30.5M (FY2024)

79. OCEAN HABITAT AND WILDLIFE RESCUE INC — West Palm Beach, FL — $30.2M (FY2024)

80. FISH & WILDLIFE FOUNDATION OF FLORIDA — Tallahassee, FL — $30.0M (FY2023)

81. Fresnos Chaffee Zoo Corporation — Fresno, CA — $29.6M (FY2024)

82. ANIMAL CARE AND CONTROL OF NEW YORK CITY — New York, NY — $29.3M (FY2022)

83. COMMONWEALTH ZOOLOGICAL CORPORATION — Boston, MA — $29.1M (FY2023)

84. MICHIGAN HUMANE SOCIETY — Bingham Farms, MI — $29.0M (FY2023)

85. OREGON HUMANE SOCIETY — Portland, OR — $28.9M (FY2023)

86. WVC — Las Vegas, NV — $28.4M (FY2024)

87. FLORIDA VETERINARY MEDICINE FACULTY — Gainesville, FL — $28.2M (FY2023)

88. AMERICAN HUMANE ASSOCIATION — Washington, DC — $28.1M (FY2023)

89. THE HUMANE LEAGUE — Rockville, MD — $27.9M (FY2024)

90. Mule Deer Foundation — Clearfield, UT — $27.3M (FY2023)

91. HUMANE SOCIETY OF MISSOURI — St. Louis, MO — $27.2M (FY2023)

92. American Bird Conservancy — Marshall, VA — $27.0M (FY2024)

93. OMAHA ZOO FOUNDATION — Omaha, NE — $26.3M (FY2024)

94. MEMPHIS ZOOLOGICAL SOCIETY — Memphis, TN — $25.8M (FY2023)

95. LIFELINE ANIMAL PROJECT INC — Atlanta, GA — $25.4M (FY2024)

96. Virginia B and David R Jontes Foundation — Phoenix, AZ — $25.2M (FY2024)

97. AKRON ZOOLOGICAL PARK — Akron, OH — $25.2M (FY2024)

98. EMANCIPET INC — Austin, TX — $24.9M (FY2023)

99. UTAH ZOOLOGICAL SOCIETY — Salt Lake City, UT — $24.9M (FY2024)

100. PANTHERA CORPORATION — New York, NY — $24.7M (FY2024)

Who funds this sector

Drawn from each funder's own IRS filing, not reported by the organizations they fund.

PETCO LOVE — 741 organizations funded, most recently 2024

PETSMART CHARITIES INC — 669 organizations funded, most recently 2024

THE AMERICAN SOCIETY FOR THE PREVENTION — 440 organizations funded, most recently 2024

BEST FRIENDS ANIMAL SOCIETY — 335 organizations funded, most recently 2023

GREATER GOOD CHARITIES — 305 organizations funded, most recently 2022

The Humane Society of the United States — 209 organizations funded, most recently 2024

BANFIELD FOUNDATION — 135 organizations funded, most recently 2024

THE GREY MUZZLE ORGANIZATION — 108 organizations funded, most recently 2024

NATIONAL FISH AND WILDLIFE FOUNDATION — 85 organizations funded, most recently 2023

AMERICAN ASSOCIATION OF — 73 organizations funded, most recently 2024

THOROUGHBRED AFTERCARE ALLIANCE FOUNDATI — 71 organizations funded, most recently 2024

FLORIDA ANIMAL FRIEND INC — 69 organizations funded, most recently 2024

DORIS DAY ANIMAL FOUNDATION — 60 organizations funded, most recently 2024

AHIMSA FOUNDATION — 59 organizations funded, most recently 2024

MUTTNATION FOUNDATION INC — 43 organizations funded, most recently 2024

Closehaul Capital Charitable Inc — 40 organizations funded, most recently 2024

Where individual donors give

Donor-advised funds and giving platforms that pass on gifts from individual donors. They fund across every sector and do not take proposals.

PAYPAL Charitable Giving Fund

AMERICAN ONLINE GIVING FOUNDATION INC

NETWORK FOR GOOD

FIDELITY INVESTMENTS CHARITABLE GIFT FUND

SCHWAB CHARITABLE FUND

Vanguard Charitable Endowment Program

CHARITIES AID FOUNDATION AMERICA

NATIONAL PHILANTHROPIC TRUST

MORGAN STANLEY GLOBAL IMPACT FUNDING TRUST INC

THE BLACKBAUD GIVING FUND

Trends

We hold one year of filings per organization today, so we cannot yet show how this sector has changed over time. We would rather leave this out than chart something that only looks like a trend.

Source: IRS Form 990 filings and other public records, republished by Helpfund. Placement is never sold.