The Bull Arab is an Australian dog purpose-bred primarily as a finder and lugger for feral pig hunting. They were bred to create a dog large enough to stop large boars but with enough speed and stamina to outlast other heavier mastiffs.
The Bull Arab is not yet a registry-recognised breed of dog in Australia.
The Bull Arab was probably first developed in the 1970s by Mike Hodgens and is a cross between a Bull Terrier, Greyhound, and German Shorthaired Pointer. Originally they were 50% Bull Terrier, to add tenacity and bite strength, 25% Greyhound for speed, sight and athleticism, and 25% German Shorthaired Pointer for air scenting ability, intelligence and silence whilst hunting.
Another theory is that an English Pointer was used instead of a German Shorthaired Pointer and Saluki (hence the name Arab) instead of Greyhound. Some lines include 12.5% Bloodhound blood to add stamina and tracking ability. This strain is often called the Paulsen Bull Arab after Peter Paulsen its creator.