What Koko the gorilla could and couldn't do
Why Koko the Gorilla, Who Mastered Sign Language, Mattered
The end of an era': Koko, the gorilla who learned sign language, dies at 46 | CBC News
Koko the gorilla calls man "stupid" about climate change.
Free American Sign Language Course - Koko the Gorilla speaking in sign language! >>>>>https://bit.ly/2m8pjEL | Facebook
Watch Koko: The Gorilla Who Talks | Prime Video
Dr. Goodall Remembers Koko the Beloved Gorilla
Gorilla uses sign language to communicate with zoo visitors - YouTube
Great ape language - Wikipedia
Can primates learn signs and acquire language? | British Deaf News
Koko, famed gorilla that learned sign language, dies aged 46 | Animals | The Guardian
Gorillas are showing signs of learning to talk, say researchers | The Independent | The Independent
Gorilla seeks help using sign language
Why Koko the Gorilla, Who Mastered Sign Language, Mattered
How Koko forever changed the way we think about gorillas
Communication – The Gorilla Foundation
Why Koko the Gorilla, Who Mastered Sign Language, Mattered
Conversations with Koko: an audience with world's favourite 'talking' gorilla
The Apes Who Learned Sign Language
Koko: Gorilla death coverage rekindles language debate
Koko the gorilla, born 1971, was able to use sign language and understand spoken English; she was capable of rhyming and had her own pet kitten, which she named 'All Ball'. :
Communication – The Gorilla Foundation
