Koko is a female gorilla who is one of the most popular animals in the world. Her intelligence is quite known worldwide. According to her trainer Francine “Penny” Patterson, Koko is able to understand more than 1000 signs and approximately 2000 English words. Even though apes are the most intelligent animals on earth after humans, having such a large vocabulary is still a very astonishing thing.
This video below features how Koko the gorilla communicat