Eastern Banjo Frog
Limnodynastes dumerilii

Sadly, Eastern Banjo Frog appears to be the name chosen by most authorities for this species when another name it has is possibly the best of all frog names: the Pobblebonk. Both names (along with Four-bob Frog) come about from the call. They are medium-sized (from 5.2 - 9 cm) and come in a range of markings and colours, dependant on subspecies. They occur from southern Queensland round to a little west of Adelaide and can be found in a range of environments. They are burrowing frogs, which is why these two are covered in sand.
 

1: Hattah-Kulkyne NP, Vic, 04/06/2011.