Koko The Gorilla

Koko The Gorilla who master sign language has passed on at the age of 46 just shy of her 47 birthday in her sleep.She had a book called Koko's kitten which was about the love she had for her first pet kitten that passed away on her.The book was on Reading Rainbow as well.Koko knew over 1,000 and understood  over 2,000 words spoke was well.