Koko, the western lowland gorilla that began to learn sign language in the San Francisco Zoo and eventually became a celebrity beloved by millions, passed away in her sleep Tuesday at the age of 46.

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 ...

Koko, likely the world’s most famous gorilla, has died. The Gorilla Foundation, the California-based non-profit the 46-year-old primate called home, announced the news on Thursday. According to a ...

Koko, the gorilla who mastered sign language, died at the age of 46. Koko, the gorilla who mastered sign language and became a pop-culture phenomenon, will be laid to rest Saturday in a ceremony at an ...

Koko the gorilla is famous for having learned a number of hand signs to help her communicate with her caregivers. So when she was introduced to a box full of kittens she told her trainers, in the only ...

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 ...

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 in California’s Sana Cruz ...

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 ...

(Reuters) - Koko, a western lowland gorilla said to have mastered American Sign Language, has died aged 46, the California institute which studied her said on Thursday. "The Gorilla Foundation is sad ...

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 mountains on Tuesday.