Distribution :
The saltwater crocodiles (Crocodylus porosus) which in Sarawak is
sometimes refer to as the 'Bujang Senang' or the 'happy bachelor' occurs
widely in coastal swamps and rivers from Southeast Asia to Australia and
the islands of the Western Pacific. In Sarawak this species is commonly
found in lowland areas. Though primarily found along wide sluggish rivers
and brackish swamps like the Batang Lupar and its tributaries, Sarawak
mangrove areas, Batang Samarahan etc, the Crocodylus porosus also
ranges far up major rivers into very dissimilar habitats. Their hatchlings
have been seen in the Loagan Bunut
area, Sarawak's only natural lake which drains into Sungai Teru riverine
system in the 4th Division. The species was also reported to have been
spotted at Upper Belaga and as far up the Kelauh, a small freshwater
tributary of Batang Lupar.
Food habit:
Hatchlings feed mainly on small crabs and prawns which they normally
capture at water edge. However adult crocodiles probably feed principally
on fish, through sometimes become opportunists feeders and tend to prefer
dead or dying prey. Preys are taken alive, unless of small size, are
generally left to rot before being taken.
Breeding Behavior:
The species tend to be aggressive during mating season or when guarding
its nesting area. They tend to be territorial in behavior and usually
seen attacking any incoming object including human being to their
territory. Due to the gentle slope of its river bank, Batang Lupar, is
one of the popular nesting ground for this reptile.