Robins Williams got Koko to smile for the first time in 6 months when the pair met in 2001. Kelli Bender is the Pets Editor at PEOPLE. She has been working at PEOPLE since 2013. Her work has ...

Koko, likely the world’s most famous gorilla, has died. The Gorilla Foundation, the California-based non-profit the 46-year-old primate called home, announced the news on Thursday. According to ...