Equality does not entail equality across species

I critique Peter Singer’s view that equality across species is a natural extension of equality. Singer presents one minor and two major arguments. The first major argument is that equality across species is implied by the traditional principle of equality. The second is that it follows from a conception that is behind the principle of equality, namely the moral “point of view of the universe.” The minor argument is a theory of the altruistic character and expanding circles of ethics