Koko the gorilla. (File photo)n.a. 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 ...

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 ...

Koko was born at the San Francisco Zoo, and Dr. Francine Patterson began teaching the gorilla sign language that became part of a Stanford University project in 1974.

Koko, the sign language-speaking gorilla, died unexpectedly in her sleep last week, just shy of what would have been her 47th birthday on July 4. News of her death saddened millions around the ...

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 ...

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.

SAN FRANCISCO (AP) — 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 ...

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 was born at the San Francisco Zoo, and Dr. Francine Patterson began teaching the gorilla sign language that became part of a Stanford University project in 1974.