Animal morality: are humans merely animals?

[Fat middle]

Originally Posted by BeardofPants

Clearly it is not as simple as that, since we have no way of knowing the complexities of mammal vocalisation. Chimpanzees have warfare, rape, and murder - who's to say this is just mere instinct?

As I've said to BJ, you can see the difference analyzing the changes in animal groups and human societies. The differences speak clearly of a radical difference, that IMHO cannot be other than the existence or not of rationality (which includes not only intelligence, but also free will and sociability).