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 gorilla, who has died at the age of 46, was famed for her communication skills and her mastery of sign language. Taught by animal psychologist Francine "Penny" Patterson and others since the ...

Koko, the beloved gorilla who shocked the world with her mastery of sign language and ability to communicate with humans, died in her sleep at the age of 46, officials announced Thursday. The western ...

The beloved gorilla Koko, famous for being fluent in sign language, passed away in her sleep Tuesday in Woodside, California. The western lowland gorilla was 46. Koko was born at the San Francisco Zoo ...

“The Gorilla Foundation is sad to announce the passing of our beloved Koko,” the research center says, informing the world about the death of a gorilla who fascinated and elated millions of people ...

“Koko, the Gorilla Who Talks,” which airs Wednesday on PBS, tells a story whose outlines may no longer be as well known as I would assume. Like people going to the moon, it is science news from back ...

Millions continue to mourn a gorilla, and that’s a good sign for humanity. Koko, a western lowland gorilla, died in her sleep at age 46 last week. Koko started learning a version of American Sign ...

Koko the gorilla doted on her pet kitten as if it were her own child. To the amazement of her human handlers, she seemed able to capture the joys and annoyances of maternal love in strings of simple ...

Koko, the thoughtful gorilla who captivated the world through her ability to use sign language and revealed an empathetic side to great apes, has died. She was 46. The western lowland gorilla passed ...