NATIONAL ANIMAL GROUPS & RESOURCES
- Alley Cat Allies
- American Humane Association
- American Veterinary Medical Association
- American Society for the Prevention of Cruelty to Animals (ASPCA)
- Animal Legal Defense Fund
- Best Friends Animal Sanctuary
- Doris Day Animal League
- The Humane Society of the United States
- The Jane Goodall Institute
- Pit Bull Rescue Central
- Planet Urine
- World Wildlife Fund