Taming Wild Animals, From the March 2011 issue of National Geographic "Are we domesticated in the sense of dogs? No. But I am comfortable saying that the first thing that has to happen to get a human from an apelike ancestor is a substantial increase in tolerance toward one another. There had to be a change in our social system."
Chew on that for a bit, along with some evidence of the correlation between domestication and cuteness:
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