A long-term study of the world's largest known community of chimpanzees has documented a rare event: what the researchers describe as the primate equivalent of a "civil war." ...

Outbreaks of violence between chimpanzees have sparked fierce debate online about the origins of war in humans ...

Drumming and singing at the same time is impressive, whether you’re Karen Carpenter, Ringo Starr or a chimpanzee. Japanese ...

The riskiest behavior in humans peaks in adolescence. Researchers from the University of Michigan and James Madison University expected to find risky behavior to peak in adolescence in a study of ...

Young chimpanzees learn their communication style from their mother and maternal relatives, but show little similarity to the communication behavior of their father and paternal relatives, according ...

A once large and peaceful group of chimpanzees in the western forests of Uganda has now split into two, causing a rare “civil ...

Jane Goodall always remembered the first time a wild chimpanzee took a banana from her outstretched hand. In that moment, she would often say, the chimp—a grizzled male she had dubbed David ...

For years, two sets of chimpanzees lived as one in Uganda’s Kibale National Park — grooming, interacting and patrolling their territory in a cohesive community. Then suddenly, one set charged the ...