Koko allegedly signed "tear" after she learned of Robin Williams' death in 2014. His performance made us chuckle, and we fell in love with his sense of humor. Robin Williams had achieved fame as an actor, but it was his humility that was most respected. Everyone in his presence felt it, and when he first saw Koko, the gorilla, he saw that it was true even for … [Read more...] about Robin Williams Helped Koko The Gorilla Laugh For The First Time in 6 Months, Following The Loss of Her Childhood Buddy