Doug was the leader of his chimpanzee group. He had quickly gained a reputation from human observers as a fair and tolerant alpha male. One day he was separated from the group for some health checkups ...

An entourage of subordinate chimps is gathered eagerly around Steward, the big alpha-male chimpanzee, at the Yerkes National Primate Research Center outside of Atlanta. They're watching Steward ...

In the next scene, Vanilla jumps up and down and hugs another chimpanzee, identified as alpha male chimpanzee Dwight by Save the Chimps, before looking up at the sky with wide eyes. "Dwight ...

When a male chimpanzee wants to hit on a female without causing a scene, he sometimes has to get a little creative. "The alpha male, he can mate with whoever he wants, whenever he wants ...

A chimpanzee at San Francisco Zoo and Gardens who was said to be one of the oldest in the United States died this week at the ...

The Zoo on Wednesday announced the recent passing of Maggie, one of the oldest chimpanzees in the United State, from lymphoma ...

Maggie, a chimpanzee that had been at the San Francisco Zoo for over half a century, died last week after suffering from cancer. Maggie was believed to be just shy of 56 and came to the zoo in 1970, ...

San Francisco Zoo announced Maggie, its beloved chimpanzee, died at age 55 after being diagnosed with lymphoma. The zoo said ...

Maggie, a 55-year-old chimpanzee at the San Francisco Zoo, died from lymphoma just before her 56th birthday. She was known ...