Neanderthals are usually seen as brutish and primitive, but research now suggests our ancestors kissed often - and even with ...

Uganda’s Ngogo chimpanzees are well known for their “chimpanzee warfare.” Primatologists have observed their brutal, lethal ...

After gaining new territory through conflict, a chimpanzee group saw higher birth rates and better infant survival due to ...

The San Francisco Zoo is soon saying goodbye to its three chimpanzees -- Twiggy, Gombus, and Michael -- as it plans to ...