- Alley Cat Allies
- Alley Cat Rescue
- Alternatives for Research and Development Foundation
- American Anti-Vivisection Society
- American Eagle Foundation
- American Humane Association
- Animal Charities of America
- Animal Legal Defense Fund
- Animal Rights Institute
- Animal Welfare Institute
- Animals For Adoption
- Ape and Monkey Rescue and Sanctuaries
- Apes Alive: The Primate Rescue Center
- ASPCA: American Society for the Prevention of Cruelty to Animals
- Assistance Dog Institute
- Assistance Dog United Campaign
- Avian Conservation
- Big Cat Rescue Corp
- Born Free USA united with Animal Protection Institute
- Canine Assistants
- Canine Companions for Independence
- Compassion Over Killing
- Days End Farm Horse Rescue
- Dedication and Everlasting Love to Animals
- Dogs for Deaf and Disabled Americans (NEADS)
- Dogs for the Deaf, Inc.
- Dogs On Death Row
- Elephant Sanctuary
- Farm Animal Reform Movement (FARM)
- Friends of Animals
- Greyhound Foundation
- Guide Dogs for the Blind, Inc.
- Guide Dogs of America
- HawkWatch International
- Hearts United for Animals
- Humane Farming Association
- In Defense of Animals
- International Fund for Animal Welfare, Inc.
- International Hearing Dog, Inc.
- KSDS Inc.
- Labs4Rescue, Inc.
- Last Chance for Animals
- Marin Humane Society
- Marine Mammal Center
- New York Horse Rescue Corporation
- Orangutan Foundation International
- Paws With A Cause
- Pet Life Line
- Pet Partners
- PETA: People for the Ethical Treatment of Animals
- Physicians Committee for Responsible Medicine
- Puppies Behind Bars
- Release Chimpanzees
- Search Dog Foundation, National Disaster
- Seeing Eye, Inc.
- Service Dogs For America
- Siamese Cat Rescue Center
- Southeastern Guide Dogs
- Spay-Neuter Assistance Program (SNAP)
- United Animal Nations
- United Poultry Concerns
- Vegan Outreach
- WildCare
- Wolf Center, International
- World Society for the Protection of Animals
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