WOODSIDE, Calif.-- Koko, the gorilla who mastered sign language, has died. The Gorilla Foundation says the 46-year-old western lowland gorilla died in her sleep at the foundation's preserve in ...

Koko, the western lowland gorilla that died in her sleep Tuesday at age 46, was renowned for her emotional depth and ability to communicate in sign language. She became an international celebrity ...

WOODSIDE, Calif. (AP) — 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 ...

The Gorilla Foundation has regretfully announced the death of one of the world’s most iconic Western lowland gorillas this week, a 46-year-old specimen named Koko. Citing their public statement on the ...