Plot
A documentary that follows Dr. Penny Patterson's current scientific study of Koko, a gorilla who communicates through American Sign Language.
Trailer
Trailer's not available.
Cast
Penny Patterson
Herself
Koko
Herself
Saul Kitchener
Himself - Director Emeritus, San Francisco Zoo
Carl Pribram
Himself - Professor of Neuroscience
Roger Fouts
Himself
