 They are similar in appearance to "Pogona nullarbor" and "Caimanops amphiboluroides" (mulga dragon), but are distinguished by smaller heads, and the arrangement of spines on their undersides and necks.The western bearded dragon is widespread in Southwest Australia and central deserts; the range includes semiarid regions such as woodland or heathland, and arid desert or coastal dunes.This subspecies also occurs on Dirk Hartog Island.