Halls Heeler
The Halls heeler was a historical Australian cattle dog strain developed by Thomas Simpson Hall and his family in nineteenth-century New South Wales. Hall is said to have crossed British droving dogs with dingo ancestry to produce tough, blue or red speckled heelers that could move semi-wild cattle across large pastoral holdings. These dogs were valued for endurance, low heeling style, heat tolerance, and the ability to work at distance in rough country.
As a separate strain, the Halls heeler is generally considered extinct, though it was an important foundation behind the modern Australian Cattle Dog and related stumpy-tailed cattle dogs. People using the name today should treat it as a historical reference unless a breeder can explain exactly what is meant. Modern descendants of this working tradition need stock sense, training, and a job for their minds; without that outlet, the same nipping, chasing, and persistence that helped on cattle can become difficult in a household.