Ziegler's water rat (Hydromys ziegleri ), discovered in the mid-2000s, is a semiaquatic species of rodent native to the mountains Papua New Guinea of which little is known.
This species inhabits both terrestrial and freshwater systems. This includes forests, subtropical and tropical moist lowland forests, inland wetlands, permanent watercourses, and artificial terrestrial areas. The animal has only been recorded in Bainyik, located on the south slopes of the Prince Alexander Mountains at an elevation of 200 meters (650 feet). The rat has been found to live in creeks and rivers in low lying tropical rain forests but it may also live in higher elevations.
