The new Guinea Crocodile inhabits the Northern part of the island (with the Halls new guinea crocodile inhabiting the South). Males grow up to 3.5 and females 2.7 with weight not exceeding 200kg.
It is found in freshwater swamps, rivers and lakes throughout the interior of northern New Guinea. They are nocturnal, spending most of the day submerged in water with only their eyes and nostrils above the water. Newly hatched crocs feed on insects frogs and similar, with the size of prey increasing as they grow. While an adults diet is largely fish, it will take snakes birds and mid-sized mammals given the chance.
In the past, this species was considered vulnerable, but in 1998 it was downgraded to least concern. It was hunted heavily in the past, but this has improved in recent decades.