Stretching 560km from the Crocker Range in the southwest of Sabah to the Sulu Sea in the east, the Kinabatangan River sustains one of the world's richest ecosystems. The surrounding areas along the river consist of five distinct habitats - dipterocarp or dry, waterlogged and limestone forests, and freshwater and saline swamps. The lower basin of the river itself is the largest forest covered floodplain in Malaysia and has the largest concentration of wildlife in the South East Asian region.
Ranging Behavior of Proboscis Monkeys
Proboscis monkeys have large prominent noses. They have large, extended bellies, giving them the appearance of being permanently pregnant. The color of upper bodies of the monkeys are generally in pale grayish-yellow to reddish brown.
The fur on their upper back tends to be darker while the lower section of their body re paler.