Robin Williams once shared a heartwarming moment with Koko, the gorilla known for her ability to understand over 2,000 words and use 1,000 signs in sign language. Their bond was instant, with both showing deep affection and laughter. When Koko was later told of Robin’s death, she responded with the signs “CRY” and “LIP,” then became quiet and visibly emotional, bowing her head and quivering. The moment showed Koko’s emotional intelligence — and how deeply Robin’s presence touched even non-humans