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 ...

WOODSIDE, California -- Koko the gorilla passed away Tuesday morning in her sleep at the age of 46. Koko was known for her extraordinary mastery of sign language. Koko was born at the San Francisco ...

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 ...

WOODSIDE, Calif. -- Koko the gorilla passed away Tuesday morning in her sleep at the age of 46. Koko was known for her extraordinary mastery of sign language. Koko was born at the San Francisco Zoo ...

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 ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. Koko, the gorilla who mastered sign language, has died. The Gorilla Foundation says the 46-year-old western lowland gorilla died ...