Order : Primates
Family : Pongidae
The Orang Utan is tail-less, with small ears and a small nose. The
coat is long and soft, and reddish brown in color. The arched eyebrows
are not very conspicuous, and the jaws are prominent. The head is
pear-shaped, the eyes small, and the lips mobile. The arms are very
long and strong, and its prehensile feet gives it a 4-handed appearance.
Length of head and body averages 96 cm (38.4 inch), standing height
137 cm (54.8 inch), weight 75 kg (165 lbs); females about 80-85%
of height and 50% of weight of males.
The Orang Utan feeds mainly on fruit, especially on figs, but it
also eats leaves, bark, shoots and flowers. It is arboreal, rarely
descending to the ground. It usually lives a solitary life, with
mothers and offspring forming the only long-term bond. The adult
males live on their own, and only join a female and her young on
a temporary basis for mating. There is no evidence of fighting between
adult males, and they do not appear to display any territorial behavior.
The gestation period lasts between 233-263 days, and the single
infant is nursed for many months.
Borneo and Sumatra