We're forever finding small deep holes in the ground and these are made by Bandicoots as they dig for insects and foodstuffs.
They are nocturnal creatures and every evening we have quite a few of them scurrying around the gardens.
The top photo is a Long Nosed Bandicoot which is tucking into a piece of bread just outside our kitchen-door.
Underneath is a Northern Brown Bandicoot which is a bit larger - about the size of a large rabbit - with a shorter nose and is generally more common than the Long-Nosed.
An interesting fact is that these marsupials have rear-facing pouches so that the pouches don't get filled with soil while they are digging!