Synopsis
A documentary that follows Dr. Penny Patterson's current scientific study of Koko, a gorilla who communicates through American Sign Language.
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Cast
- Penny PattersonHerself
- KokoHerself
- Saul KitchenerHimself - Director Emeritus, San Francisco Zoo
- Carl PribramHimself - Professor of Neuroscience
- Roger FoutsHimself
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