roadkill said: This is a bad example; the aphid "farming" is more like symbiosis than slavery. The ants don't actually do anything to the aphids except eat their sugary excrement. We shoot animals in the head and make them into pie and shoes and things. These are not the same kind of relationship because they have different consequences for individuals of the subject species. DON'T GENERALIZE BETWEEN SPECIES! This is a favourite tactic of every sociologist, to claim that human males are aggressive because female hyenas have penises and garbage like that. Just because we do things that are superficially similar does not mean that they are the same. That was my point!