Contact: John Delaney
Wildlife Conservation Society
Caption: The Grauer's gorilla is the world's largest gorilla (silverbacks such as this one can grow up to 500 pounds in weight) as well as the least known due to the insecurity of its range in the eastern Democratic Republic of Congo.
Credit: A. Plumptre/Wildlife Conservation Society
Usage Restrictions: One time usage only. Must use the following credit: A. Plumptre/Wildlife Conservation Society
Related news release: Recent census in war-torn DR Congo finds gorillas have survived, even increased