To show favoritism toward humans has been considered a prejudice, otherwise known as ‘human chauvinism’, ‘anthropocentrism’ or ‘speciesism’. Peter Singer is one philosopher, in particular, who holds this view. In this paper I argue that there is lack of coherence between his ethical ideology and his actual ethical theory. Singer’s ethics in crucial respects exhibits favoritism toward humans, which is something he fails to justify nonpartially and plausibly. It would thus be an instance of speciesism, in a sense of this term that he probably would accept. This, however, does not mean that his ethics should be rejected or is impossible to defend.
