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Javan Gibbon


Quick Facts

Scientific name: Hylobates moloch
Class: Mammal
Length: 1.4 to 2 feet (45 to 64 centimeters)
Weight: 11 to 20 pounds (5 to 9 kilograms)
Life span: 35 years in wild; up to 50 years in captivity
Gestation: 7 months
Number of offspring: 1 at a time
Age of maturity: 6 to 7 years
Conservation status: Endangered


Swingin’ in the rain

Javan gibbons live in the rain forest regions of Java, which is an island in Indonesia. At the Fort Wayne Children’s Zoo, you’ll find the Javan Gibbon in the Indonesian Rain Forest. Makes sense, huh?

What helps them get around?

Like all gibbons, Javan gibbons have very long forelimbs, long fingers and shorter thumbs which make them great brachiators. That means they swing between branches in trees.

They’re so fluffy!!!

Javan Gibbons have a fluffy appearance because of their very dense and long silvery-grey fur.

It’s a family thing

Family groups are made up of a male and female and up to three juvenile offspring.

Controlling their turf

Like other gibbons, their territory is maintained by patrols, physical conflict and loud calling. Often, the male and female pair will sing together, creating a sort of musical duet in the forest.

Note: The Fort Wayne Children’s Zoo is one of only two zoos in North America to exhibit this rare species.  The other is the Greensboro Science Center in North Carolina.

We participate in the Association of Zoos & Aquariums Species Survival Plan (SSP) for the Javan Gibbon to ensure the survival of endangered wildlife species. The zoo financially supports the Gibbon Conservation Center .

Gibbon Diet

  • Fruits
  • Some leaves
  • Nectar
  • Grubs


Learn more about our efforts, our conservation partners around the world, and the simple steps you can take to contribute.