Koko: A Talking Gorilla (1978)

Name: Koko: A Talking Gorilla
Genre: Documentary
Released: 1978-10-11
Duration: 85 min
Cast: Penny Patterson, Koko, Saul Kitchener, Carl Pribram, Roger Fouts

A documentary that follows Dr. Penny Patterson's current scientific study of Koko, a gorilla who communicates through American Sign Language.