This genus contains a number of species with different habits making generalisation difficult. The overall body size varies widely, ranging from 60 to 160 mm. The tail is 60–180 mm and the weight is recorded from 12 to 90 g. They inhabit a wide variety of
habitats from
rainforests to
plains and
grasslands. The animals are
nocturnal and spend the day in
burrows. Food also varies with some species eating
seeds,
roots and
insects while others feed primarily on
grasses. The
pebble-mound mice are unique in creating mounds of stones around their burrows. Several species of
Pseudomys are threatened due to competition with introduced species and
habitat destruction. Several others are probably
extinct. ==Etymology==