Learn how comparing aggression in chimpanzees and bonobos challenges the long-held belief that chimpanzees are the more violent of our closest ape relatives.

The stereotype of violent chimpanzees and peaceful bonobos may be wrong, according to new research comparing aggression in both apes.

A new study of chimpanzee and bonobo groups at zoos reveals similar levels of aggression. However, scientists found stark sex-based differences between the species.

When people find out we study chimpanzees, they usually ask about their dark side. “You know chimpanzees kill each other, right?” or “Aren’t they the only animals besides humans that wage wars?” ...

Add Yahoo as a preferred source to see more of our stories on Google. New research led by UCLA and the University of Michigan has shown that chimp communities that kill their neighbors to gain ...

Historically considered a more peaceful species than their chimpanzee cousins, bonobos are actually just as aggressive -- but target their ire most often at males, according to a study published ...