Abstract

Speciesism, difference of treatment based on an appeal to species membership, is often likened to racism and sexism, and condemned on those grounds. Some philosophers, however, reject this argument by analogy and instead forward an argument for speciesism based on a postulated right of species to compete for survival. This paper attacks this strong form of speciesism by showing that the underlying concept of ‘species’ is incoherent in the context of morality, and that strong speciesism has unacceptable corollaries.