While growing empirical evidence suggests a continuity between human and non-human psychology, many philosophers still think that only humans can act and form beliefs rationally. In this paper, we challenge this claim. We first clarify the notion of rationality. We then focus on the rationality of beliefs and argue that, in the relevant sense, humans are not the only rational animals. We do so by first distinguishing between unreflective and reflective responsiveness to epistemic reasons in belief formation and revision. We (...) argue that unreflective responsiveness is clearly within the reach of many animals. We then defend that a key demonstration of reflective responsiveness would be the ability to respond to undermining defeaters. We end by presenting some empirical evidence that suggests that some animal species are capable of processing these defeaters, which would entail that even by the strictest standards, humans are not the only rational animals. (shrink)

It has been argued that if non-human animals had rights we should be obliged to defend them against predators. I contend that this either does not follow, follows in the abstract but not in practice, or is not absurd. We should defend non-humans against large or unusual dangers, when we can, but should not claim so much authority as to regulate all the relationships of wild things. Some non-human animals are members of our society, and the rhetoric of 'the land (...) as a community' is an attempt, paralleling that of humanism, to create the moral ideal of Earth's Household. But wild animals should be considered as Nozick's 'independents' and have correspondingly fewer claims on our assistance than members of our society. They still have some claims, often strong ones. (shrink)