WOODSIDE (California): 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 mountains on Tuesday.
WOODSIDE (California): 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 mountains on Tuesday.
