Koko: A Talking Gorilla (1978) is a Documentary film that follows a documentary that follows Dr. Penny Patterson's current scientific study of Koko, a gorilla who communicates through American Sign Language. Currently, you can watch Koko: A Talking Gorilla on Criterion Channel. Streaming availability may vary by country and platform over time. It has a user rating of 7.0 out of 10 from 22 votes. Fans of documentary movies may also want to explore similar titles below.