@CNN: Koko, the gorilla who mastered sign language, died in her sleep at age 46, The Gorilla Foundation says. She was said to have understood some 2,000 words of spoken English. https://t.co/8PRhM1lO1W https://t.co/qK5ebt9R2u

June 22, 2018 / The Arbiter / CNN

@CNN: Koko, the gorilla who mastered sign language, died in her sleep at age 46, The Gorilla Foundation says. She was said to have understood some 2,000 words of spoken English. https://t.co/8PRhM1lO1W https://t.co/qK5ebt9R2u

Koko, the gorilla who mastered sign language, died in her sleep at age 46, The Gorilla Foundation says. She was said to have understood some 2,000 words of spoken English. https://t.co/8PRhM1lO1W pic.twitter.com/qK5ebt9R2u

— CNN (@CNN) June 22, 2018

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