There are three species of medium to large-sized marsupials in this family. Wombats are found in Australia.

Wombats are brown and have stocky bodies; short, powerful legs; short snouts; and short tails. Wombats use their strong front legs and long, strong claws to burrow into the ground. In fact, the wombat is the largest burrowing mammal.

Wombats are mostly nocturnal, but they can be active during the day. Wombats eat grasses, herbs, leaves, roots, sedges, and bark.