★ 6.4
★ 7.4
★ 0.0
★ 10.0
★ 6.7
★ 6.1
★ 7.0
★ 8.4
★ 7.2
★ 8.0
★ 6.8
A documentary that follows Dr. Penny Patterson's current scientific study of Koko, a gorilla who communicates through American Sign Language.
