Release date: 10/11/1978
Popularity: 3
Original language: FR
A documentary that follows Dr. Penny Patterson's current scientific study of Koko, a gorilla who communicates through American Sign Language.
Release date: 10/02/2021
Genre:Documentary
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Genre:DocumentaryHistory
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Genre:DocumentaryTV Movie
Release date: 04/13/2013
Release date: 03/25/1992