Never Underestimate Animals Capabilities - Sign language is the way of the future!
koko the gorilla/sign language Vol.1 Ch.3
Lady - British Sign Language (BSL)
"Never underestimate the intelligence of our fellow animals."
Koko, the gorilla who knows sign language. This is a worthwhile foundation.
"Gorilla Sign Language" at Busch Gardens® Tampa Bay, Florida
What Koko the Sign-Language-Speaking Gorilla Can Teach Us About Being Human - The Atlantic
His thoughts on the "dicks out for Harambe" meme
Gorillas and Sign Language