Find that are working on specific issues like factory farming or animal testing .
is a philosophical, deontological position. Rooted in the work of Australian philosopher Peter Singer ( Animal Liberation , 1975) and legal scholar Tom Regan ( The Case for Animal Rights , 1983), rights theory argues that sentient beings—those capable of experiencing pleasure and pain—have inherent value. They are not property. They are "subjects-of-a-life." rabbit bestiality 2021