This article originally appeared on The Revelator. Rachel the chimpanzee grew up in a suburban household under the care of an owner who treated her like a human child. She wore human clothes, ate ...

For years, Travis the chimpanzee lived like a human child. He dressed himself, ate at the table, rode in cars, and appeared in commercials. Neighbors and police officers considered him harmless. Then, ...

Scientists Stunned as Chimpanzees Turn on Friends in Killing Spree By Will Dunham April 9 (Reuters) - For two decades, researchers observed members of the Ngogo chimpanzee group of Kibale ⁠National ...