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Koko: The Gorilla Who Talks

2016 • Documentary • Not Rated • 60 Minutes

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In 1971, graduate student Penny Patterson began teaching sign language to a gorilla named Koko. What started out as a scientific experiment evolved into an intimate friendship, which for almost half a century has challenged the way we think about animals and changed the course of many lives. Koko: The Gorilla Who Talks is a unique window into this incredible relationship.

Not Rated.

Released by PBS. See more credits.