A new study of chimpanzee and bonobo groups at zoos reveals similar levels of aggression. However, scientists found stark sex ...

Chimpanzees have a reputation for being aggressive, while bonobos are often seen as their peaceful counterparts. This contrast has frequently been used to explain different sides of human nature.

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

Chimpanzees share more than 98% of human DNA, and decades of field research across Africa show their societies can be intensely violent. Long-term studies at sites like Gombe and Kibale document ...

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

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 ...