Thanks Gary. I was having a look at the websites of Powerhause and Southern Cross for Australian Bandogs. There was an American Pitbull forum with a section on Bandogs showing Lucero dogs. They look really functional. I'd seen Lucero's Jaws and Lucero's Sha-Nae-Nae in a book by Carl Semencic written over ten years ago. They were saying on the forum that the dogs aren't outcrossed by F4 generation. I guess that's why they look like an actual breed and not a hybrid.

I was looking on youtube at dogs under Bandog heading and it looks like anything goes. Fair enough I suppose when I think about all the different blends mentioned on the forums here.