This Gorilla Has A Surprisingly Human Reaction To A Birthday Present

12. Learning the Language

001-learning-the-language-1058368Penny moved to be with Koko and worked with Dr. Ronald Cohn, a well-known zoologist, to try and do something that no-one had ever done before. They wanted to know if Koko could learn some form of sign language to communicate with them and the results were surprising.

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