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.

AMES, Iowa – Shocking is one word Jill Pruetz uses to describe the behavior she witnessed after a chimp was killed at her research site in Fongoli, Senegal. The fact that chimps would kill a member of ...

Jane Goodall, the renowned British primatologist who died on Wednesday, once drew a comparison of Donald Trump with chimpanzees, saying the US President is like an 'aggressive chimp'. Goodall, whose ...