Chimpanzees drum with regular rhythm when they beat on tree trunks, a new study shows. Chimpanzees and humans last shared a common ancestor around 6 million years ago. Scientists suspect this ancient ...

In this combination of photos provided by researchers, a wild male chimpanzee drums on a buttress tree while producing a pant-hoot call as he joins his groupmates in the Budongo Forest of Uganda in ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Chimpanzees drum with regular rhythm when ...