The Nomascus Gibbon is one of the endangered Apes. “According to their IUCN classification Nomascus have suffered from a decline of 50 - 80 % in the last 50 years,” says the article Nomascus Gibbon.* The Nomascus Gibbon had so much of decrease it now is at risk of extinction in the near future. This decrease is mostly caused by a loss in habitat. Overall lots of the gibbons are highly endangered with somes population estimated to be as little as 25.