An orangutan who was one of the first apes to learn sign language has died in Atlanta, Georgia, aged 39.
Chantek lived with an anthropologist in Tennessee for about nine years and learned to clean his room, make and use tools and memorise the route to a fast-food restaurant.
He spent his later years in Zoo Atlanta where he was treated for heart disease.
http://www.bbc.co.uk/news/world-us-canada-40858040