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 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 gorilla known for mastering a unique form of sign language and for her intimate visits with celebrities like Robin Williams and Red Hot Chili Peppers bassist Flea, has died. The famous ...

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 ...

The gorilla is famous for being able to express her emotions through sign language, even mourning the death of celebrity friend Robin Williams Kelli Bender is the Pets Editor at PEOPLE. She has been ...

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 ...

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 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 ...

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 ...

Reporting from WOODSIDE, Calif. — Koko, the gorilla who mastered sign language, has died. The Gorilla Foundation said the 46-year-old western lowland gorilla died in her sleep at the foundation’s ...