The gorilla died after being stabbed with a … Dian Fossey was a zoologist best known for researching the endangered gorillas of the Rwandan mountain forest from the 1960s to the 1980s, and for her mysterious murder. Gorilla families depend heavily on their leaders, so his death was devastating to Digit's family. Koko, the gorilla that learned sign language and formed several celebrity friendships while in captivity in the US, has died aged 46. The last of the “Gorillas in the Mist” – made famous by renowned American primatologist Dian Fossey – is believed to have died. Koko, who was 46, died in her sleep Tuesday morning, the Gorilla Foundation said. Titus the Gorilla King, who became the world's most famous mountain gorilla after starring in Dian Fossey's "Gorillas in the Mist" and a BBC documentary, has died … One of the oldest gorillas in U.S. captivity, Ivan died following surgical assessment meant to discover why he was losing weight and feeling poorly. Nico celebrated his last birthday in July and died in his sleep on Sunday at Longleat Safari Park. Four rare mountain gorillas, including a pregnant female, have died in Uganda after being hit by lightning, a conservation group says. Koko, the famous gorilla who learned sign language, to be laid to rest at animal sanctuary Koko, the gorilla who mastered sign language, died at the age of 46. At birth, she was named Hanabi-ko — Japanese for "fireworks child," … "Kweli died from bullet-wound complications combined, I think, with acute depression. Around 1962, Ivan … Four men have been arrested after the body of Rafiki, one of the world’s most famous mountain gorillas, was discovered in Uganda. This past Tuesday, the western lowland gorilla known as Koko died at age 46. On December 26, 1985, primatologist and conservationist Dr. Dian Fossey is found murdered in her cabin at Karisoke, a research site in the mountains of Rwanda. Koko was famous for her ability to speak sign language and for her … One of the world's oldest silverback gorillas has died at the ripe old age of 56.