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Found in
Indonesia and on the islands of simatra and borreo
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Diet
Frugivory
Does not eat meat
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Locomotion
Slow, cautious climbers in the trees.
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Morphology
- Arms longer than legs
- Broad thorax
- Mobile, flexible wrist
- "stiff back" (few lower lumbar vertebrae)
- no tail
- dental formula 2,1,2,3/2,1,2,3
- Y-5 cusp pattern on lower molars
- marked sexual dimorphism in body size, males are 2x larger than females
- prominent sagittal crest
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Mating behavior
Mating system is noyau, which is dispersed one-male polygyny
Territory of a single male overlaps the territories of several females
Social unit is an adult female and her dependent offspring
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Tool use
Sticks are modified & used to open fruits and to prove for honey or termites
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