The earless New Guinea water rat is a strongly aquatic-adapted rodent associated with streams in New Guinea's mountains. Its large, webbed hind feet are among its adaptations for life in water.
Its hind feet are extremely large and webbed to the ends of the toes. The forelimbs are reduced, the external ears are tiny or absent, and a fringe of hairs runs along the underside of the tail.
It occurs around montane lakes, rivers, and streams and is described as one of the most specialized aquatic murine rodents. Field records associate it with streams in montane forest.
IUCN Red List · Least Concern (LC) · Global