Abstract

Based on the claim that animals have rights, Tom Regan ultimately endorses some radical conclusions: we ought to be vegans; it’s wrong to wear leather; we shouldn’t care about conserving species, but about respecting the rights of individual animals; etc. For many, these conclusions are unbelievable, and incredulous stares abound. Incredulous stares are not arguments, but they do force us to consider whether it might be reasonable for some people to reject Regan’s conclusions based on their considered beliefs. My aim here is to argue that it is. The argument is based on an analogy between Regan's defense of animal rights and David Lewis's defense of modal realism. In short, if it's reasonable to reject modal realism based on its incredible implications, then it’s probably reasonable to reject the thesis that animals have rights, and to instead accept a moral theory that, while much less elegant, doesn’t require abandoning any of our Moorean beliefs.