Add Yahoo as a preferred source to see more of our stories on Google. It was a happy ending for Tonka the chimp, focus of the HBO docuseries Chimp Crazy, which aired its final episode on Sunday night.

Tonka, the primate star of Chimp Crazy, had a heartwarming family reunion. In the HBO docuseries’ final episode, which aired Sunday, Sept. 8, the chimpanzee arrived at Save the Chimps, his sanctuary ...

Researchers led by a University of California, Berkeley, comparative psychologist have found that great apes and chimpanzees, our closest living relatives, can recognize groupmates they haven't seen ...

The more we try to understand chimpanzees, one of our closest relatives, the more we find ourselves humbled by the richness and complexity of their lives — and of their intelligence. Today, on World ...

Add Yahoo as a preferred source to see more of our stories on Google. The father-son duo, who reconnected at Save the Chimps, are seen enjoying their home in new photos the organization shared with ...