
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