In 2001, Robin Williams shared a rare and deeply moving moment with Koko, the gorilla famous for her ability to communicate using sign language. At the time, Koko had been grieving the loss of her ...

Koko the gorilla who mastered sign language, raised kittens and once playfully tried on the glasses of the late actor Robin Williams, has died. She was 46. The Gorilla Foundation says the western ...

Editor's Note: This story was published on Aug. 13, 2014. Koko died in her sleep at the foundation's preserve in California's Santa Cruz mountains on Tuesday, June 19, 2018. Robin Williams brought joy ...