I've argued that many of what philosophers call moral sentiments can be seen in other species. In chimpanzees and other animals, you see examples of sympathy, empathy, reciprocity, a willingness to follow social rules. Dogs are a good example of a species that have and obey social rules; that's why we like them so much, even though they're large carnivores.
A liberal society cannot be defended by herbivores. We need carnivores to save us, but we had better make sure the meat-eaters hunt only on our orders.Michael Ignatieff