Koko, the western lowland gorilla who learned sign language and became a pop-culture phenomenon, died Thursday morning at the age of 46. The Gorilla Foundation, headed by Dr. Francine “Penny” ...

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

Koko the gorilla, famous for learning how to speak using sign language with her human trainer, has died at the age of 46. The rest of this article is behind a paywall. Please sign in or subscribe to ...

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 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 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 ...

(CNN) -- Koko, the gorilla who mastered sign language and showed the world what great apes can do, has died. She died Tuesday in her sleep at age 46, The Gorilla Foundation said in a statement. "Koko ...

Koko, the beloved gorilla who mastered sign language, has died. She was 46. “Koko — the gorilla known for her extraordinary mastery of sign language, and as the primary ambassador for her endangered ...

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.

SAN FRANCISCO - 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 ...

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 ...

SAN FRANCISCO — 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 ...