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Story
Overview
A documentary that follows Dr. Penny Patterson's current scientific study of Koko, a gorilla who communicates through American Sign Language.
Barbet SchroederDirector
People behind the story
Top Billed Cast
Penny PattersonHerself

KokoHerself
Saul KitchenerHimself - Director Emeritus, San Francisco Zoo
Carl PribramHimself - Professor of Neuroscience
Roger FoutsHimself
Trailers & imagery
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