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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Koko, the gorilla who mastered sign language and appeared on Mister Rogers Neighborhood and numerous documentaries, died Tuesday ...

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Koko, the gorilla who showed the world that animals feel emotion just as much as humans, died in her sleep on Tuesday. She was 46 years old. A critically endangered western lowland gorilla, she was ...

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 California's Santa Cruz ...

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 ...

The Gorilla Foundation says the 46-year-old western lowland gorilla died in its sleep. Koko, the gorilla who mastered sign language, has died. The Gorilla Foundation says the 46-year-old western ...

Koko, arguably the world’s most famous gorilla, has died at the age of 46. Known for her ability to communicate through sign language, Koko forever changed our conceptions of primate intelligence and ...

WOODSIDE, Calif. — 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 ...

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 ...