Koko, the gorilla whose apparent aptitude for sign language endeared her to fans around the world, died in her sleep on Tuesday morning, according to the Gorilla Foundation, which oversaw her care.

RELATED PHOTO GALLERY New warning signs have been posted on the World War II-era bunkers at the summit of Koko Crater after a boy was critically injured over the weekend. Signs taped to the bunkers ...

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 ...

SAN FRANCISCO (AP) — Koko the gorilla, whose remarkable sign-language ability and motherly attachment to pet cats helped change the world's views about the intelligence of animals and their capacity ...

WOODSIDE, Calif. (CBSNewYork/AP) — 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 ...

Koko the gorilla, the simian who showed the world that they could communicate has died. The Gorilla Foundation made the announcement. Koko was born 46 years ago at the San Francisco Zoo. She was ...

SAN FRANCISCO (AP) — Koko the gorilla, whose remarkable sign-language ability and motherly attachment to pet cats helped change the world’s views about the intelligence of animals and their capacity ...

(NEW YORK) — Koko, the gorilla who mastered sign language and became a pop-culture phenomenon, will be laid to rest Saturday in a ceremony at an animal sanctuary in Northern California where she lived ...

Koko the gorilla, whose remarkable sign-language ability and motherly attachment to pet cats helped change the world’s views about the intelligence of animals and their capacity for empathy, has died ...

New warning signs have been posted on the World War II-era bunkers at the summit of Koko Crater after a boy was critically injured over the weekend.

Koko, a western lowland gorilla said to have mastered American Sign Language, has died aged 46, the California institute which studied her said on Thursday. "The Gorilla Foundation is sad to announce ...