Moaning Frog - Heleioporus eyrei
One of the larger frogs and very common in the region, growing to around 70 mm (excluding legs). Color on the back varies from light to dark brown with yellowish irregular patches. The arms and legs also are similarly colored, whilst the belly is smooth and white. The back and flanks have pronounced tubercles on a dark background. The call is a very distinctive moan that can be heard on this link along with other useful information: http://frogsaustralia.net.au/frogs/display.cfm?frog_id=29