Koko became the world's most famous representative of her critically endangered species. Discover 35 intriguing facts about koko the gorilla's life and death, exploring her intelligence, emotional depth, and legacy. Koko the gorilla, who became famous for her use of sign language, died in her sleep at age 46 in her california preserve on june 19, 2018.
The gorilla foundation is best known for conducting the longest interspecies communication study in history (almost 5 decades) and the only one involving gorillas Koko, the western lowland gorilla that died in her sleep tuesday at age 46, was renowned for her emotional depth and ability to communicate in sign language. Watch koko the signing gorilla in this clip from a 1981 national geographic documentary.
