A documentary that follows Dr. Penny Patterson's current scientific study of Koko, a gorilla who communicates through American Sign Language.
WHERE TO WATCH
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Criterion Channel
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CAST
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Penny Patterson
Herself
Koko
Herself
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Saul Kitchener
Himself - Director Emeritus, San Francisco Zoo
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Carl Pribram
Himself - Professor of Neuroscience
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Roger Fouts
Himself
