The Sumatran orangutans live in northern Sumatra, in the Mt. Leuser national Park. A special orangutan rehabilitation center has been established at Bohorok, Bukit Lawang, for orphaned orangutans, where orangutans are taught how to return to the wild again. Today rehabilitations has become very important, because population of orangutans are decreasing. It is difficult to teach them how to survive in the wild, because most of them were brought up by humans, and they did not learn any behaviors they should learn. …
