More precisely known as the Northern Hairy-nosed Wombat, is a critically endangered species which now only consists of less than twenty individuals in a 3km area of National park in Queensland.
It is one of the rarest large mamals in the world, and has unfortunately proved difficult to breed in captivity. One of the reasons for its rarity is that the grass it likes to feed on has been destroyed by an introduced species of grass.
For a picture, and more info, see Northern Hairy-nosed Wombat page at Wikipedia.