The Bettong, or Brush-tailed Rat Kangaroo, is an extremely rare small marsupial that belongs to the genus Bettongia. It is a small macropod, being only some 30-35 cm in body length, with a tail around 37 cm long, and weighing between 1.1 and 1.6 kg. The fur is yellowish-brown in color with a patch of paler fur on its belly, while the end of its furry tail is dark colored. It has little or no hair on the muzzle and tail. This species has a more slender build and larger ears than its relative the burrowing Bettong.