@CNN: Koko, the gorilla who mastered sign language, has 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/kh88N0DvbP https://t.co/KGWtX9BQgJ

June 21, 2018 / The Arbiter / CNN

@CNN: Koko, the gorilla who mastered sign language, has 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/kh88N0DvbP https://t.co/KGWtX9BQgJ

Koko, the gorilla who mastered sign language, has 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/kh88N0DvbP pic.twitter.com/KGWtX9BQgJ

— CNN (@CNN) June 21, 2018

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