- Adams, Carol J.1
- American Council for Judaism1
- American Humane Association3
- American Humane Education Society9
- American Society for the Prevention of Cruelty to Animals48
- American Society for the Prevention of Cruelty to Animals -- Legal cases25
- American Veterinary Medical Association4
- Animal Defence and Anti-Vivisection Society1
- Animal Liberation Front1
- Animal Welfare Institute64
- Bemelmans, Madeleine1
- Bergh, Henry, 1811-188812
- Buckmaster, Stanley Owen Buckmaster, Viscount, 1861-19341
- Buffet, Edward P. (Edward Payson), 1873-19301
- Carter, Jimmy, 1924-6
- Cobbe, Frances Power, 1822-19041
- Cohen, Carl, 1931-1
- Coleridge, Bernard Coleridge, Baron, 1851-19271
- Culture and Animals Foundation1
- Darwin, Charles, 1809-18821