He was the oldest male chimpanzee ever recorded.

For a male chimpanzee to win the alpha status, he must gain acceptance from the females in the community.

Santino is a male chimpanzee held at Furuvik zoo in Sweden.

Just try to get a male chimpanzee to sign a prenuptial agreement, and he will chatter in your face.

It was only in the 1980s that the demonic side of male chimpanzees was scientifically observed and recorded.

He cites the example of a female and a male chimpanzee at the Arnhem Zoo in the Netherlands.

We once wanted to introduce three male chimpanzees into one of our colonies at Yerkes.

As with other primates, male chimpanzees have a clear hierarchy that controls access to females.

In September 2008, another male chimpanzee died at the age of 21 from a prolonged unidentified illness.

Although large male chimpanzees can exceed any bonobo in bulk and weight, the two species actually broadly overlap in body size.