Watch Koko the signing gorilla in this clip from a 1981 National Geographic documentary. Koko died in her sleep on Tuesday, June 19, 2018.
➡ Subscribe: http://bit.ly/NatGeoSubscribe
About National Geographic:
National Geographic is the world’s premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what’s possible.
Get More National Geographic:
Official Site: http://bit.ly/NatGeoOfficialSite
Read more in “Why Koko the Gorilla Mattered”
Watch Koko the Gorilla Use Sign Language in This 1981 Film | National Geographic