What is so very striking is the immediate bond Koko developed with the actor. Koko understands around 2,000 words of spoken English and is fluent in a modified form of American Sign Language with a working vocabulary of more than 500 words.
On Monday, the day the world was informed of Williams’ death. Koko watched as the phone call of the sad news was received by Dr. Penny Patterson and Dr. Ron Cohn at The Gorilla Foundation. Koko went over to Dr. Patterson with an inquiring look on her face. The doctor told Koko “we have lost a dear friend, Robin Williams,” to which Koko became quiet and thoughtful. By the end of the day, Koko’s lip quivered and her head turned down in a somber repose.
“And when you remember Robin Williams, remember that he is not only one of the world’s most beloved entertainers, he is also one of the world’s most powerful ambassadors for great ape conservation.”