The only noise the Tasmanian wombat makes is a low hissing, but the hairy-nosed wombat is said to emit a short quick grunt when annoyed.
In addition to remains referable to the existing genus, the Pleistocene deposits of Australia have yielded evidence of an extinct giant wombat constituting the genus Phascolonus (Sceparnodon).
Other terrestrial marsupials are the wombat (Phascolomys), a large, clumsy, burrowing animal, not unlike a pig, which attains a weight of from 60 to 100 lb; the bandicoot (Perameles), a rat-like creature whose depredations annoy the agriculturist; the native cat (Dasyurus), noted robber of the poultry yard; the Tasmanian wolf (Thylacinus), which preys on large game; and the recently discovered Notoryctes, a small animal which burrows like a mole in the desert of the interior.
The wombat of Tasmania and the islands of Bass's Straits (P. ursinus), and the closely similar but larger P. platyrhinus of the southern portion of the mainland of Australia, belong to this group. On the other hand, in the hairy-nosed wombat (P. latifrons) of Southern Australia, the fur is smooth and silky; the ears are large and more pointed; the muzzle is hairy; the frontal region of the skull is broader than in the other section, with well-marked postorbital processes; and there are thirteen ribs.