A documentary that follows Dr. Penny Patterson's current scientific study of Koko, a gorilla who communicates through American Sign Language.
Director: Barbet Schroeder
Penny Patterson
Herself
Koko
Saul Kitchener
Himself - Director Emeritus, San Francisco Zoo
Carl Pribram
Himself - Professor of Neuroscience
Roger Fouts
Himself
Elsa
Gorillas Close Up
Alien Contact
Ein Tag im Frankfurter Zoo
The Gorilla Hunt
Below the Sahara
Night on Earth: Shot in the Dark
Born to Be Wild
Les influenceurs sont dans le pré
The Voice Beneath the Sea
My Octopus Teacher
Talking Hands
