CALIFORNIA (WABC) -- A famous gorilla's maternal instincts immediately kicked in when she saw a litter of kittens. Koko, the silverback gorilla who can communicate with sign language, celebrated 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 ...

Koko, a beloved gorilla that learned to communicate with humans and then stole their hearts, has died. The Gorilla Foundation said the 46-year-old celebrity ape - a western lowland gorilla - died in ...

CTV National News: Tribute to a gentle giant The beloved gorilla that became famous for learning sign language has died at age 46. Todd Battis has the story of Koko.