Western chestnut mouse

The western chestnut mouse, Pseudomys nanus, is a rodent in the family Muridae that is native to northern Australia and some nearby islands, with most of the population in Queensland and the Northern Territory. It lives in grasslands and open stands of eucalypt on sandy soil, spending the day in a grass nest and coming out mainly at night. Its diet is mostly native grasses and seeds. Breeding peaks in the wet season but can occur all year when conditions are good, with litters of three to five young after a gestation of 22 to 24 days. Adults weigh about 70 grams and are around 10 centimeters long. In the Northern Territory its populations have declined substantially since European colonisation, and feral cat predation is a likely pressure.