In chimpanzee society, we find many, many examples of compassion, precursors to love and true altruism.
The chimpanzee study was - well, it's still going on, and I think it's taught us perhaps more than anything else to be a little humble; that we are, indeed, unique primates, we humans, but we're simply not as different from the rest of the animal kingdom as we used to think.
Certainly the first true humans were unique by virtue of their large brains.
It was because the human brain is so large when compared with that of a chimpanzee that paleontologists for years hunted for a half-ape, half-human skeleton that would provide a fossil link between the human and the ape.
Last Update: January, 2020