BR
Bernard E. Rollin
Bernard Elliot Rollin was an American philosopher, who was emeritus professor of philosophy, animal sciences, and biomedical sciences at Colorado State University. He is considered the "father of veterinary medical ethics".
Excerpt from Wikipedia, available under CC BY-SA 4.0.
Books

Animal rights and human morality
1981
ISBN 9780879751586
Animal rights & human morality
2006
ISBN 9781591024217