This is a shingleback lizard - or to use the name I first knew it by, the Stumpy Tail lizard. Both names are good - its back does look like the shingles on a roof and it does have a stumpy tail.
This lizard was taking some spring sunshine on board when I found him (or her) and was remarkably tolerant as I stuck the lens of a camera up its nose!
There are many reptiles in Australia which which I would not be so bold!
You can find more shots of animals from around the world at Saturday Critters