Among the anthropoid apes they are fully bi-pedal, walking and running in an almost erect position like man. Sugary fruits are delicacies to the gibbon. They are most selective feeders and are primarily frugivores. Like humans, they are monogomous, each family group consisting of a male adult, his mate, and up to four offspring.
Female gibbons produce only one offspring every two years.
As the offspring matures it becomes independent and leaves the group between the ages of six to eight years. This species is rapidly becoming endangered because of the ignorance of man. They are hunted for food, shot for sport, or captured for pet trading. Most of all, man has contributed their rapid endangerment by deforestation of their natural habitat.