• Animals can feel pain — Peter Singer http://www.animal-rights-library.com/texts-m/singer03.htm 32 comments 8/1/2019 philosophy
• The Case for Animal Rights: Tom Regan http://www.animal-rights-library.com/texts-m/regan03.htm 11 comments 17/2/2017 philosophy
• The Concept of Beastliness: Philosophy, Ethics and Animal Behavior by Mary Midgley http://www.animal-rights-library.com/texts-m/midgley02.htm 3 comments 4/4/2015 philosophy