 The New Guinea crocodile ( Crocodylus novaeguineae ) is a small species of crocodile found on the island of New Guinea where there are two geographically isolated populations to the north and south of the mountain ridge that runs along the centre of the island . In the past it included the Philippine crocodile , C. n. mindorensis , as a subspecies , but today they are regarded as separate species . The habitat of the New Guinea crocodile is mostly freshwater swamps and lakes . It is most active at night when it feeds on fish and a range of other small animals . A female crocodile lays a clutch of eggs in a nest composed of vegetation and she lies up nearby to guard the nest . There is some degree of parental care for newly hatched juveniles . This crocodile was over @-@ hunted for its valuable skin in the mid 20th century , but conservation measures have since been put in place , it is reared in ranches and the International Union for Conservation of Nature ( IUCN ) lists it as being of " Least Concern " . 
