Australian Cattle Dogs, also called Blue Heelers or Queensland Heelers, were developed in nineteenth-century Australia to drive half-wild cattle over long distances in heat and dust. Settlers crossed collie-type herding dogs with dingoes to create a tough, quiet worker that nips at the heels of stock. The result is a compact, muscular dog of about 35 to 50 pounds with a weatherproof double coat in blue or red speckle.
Heelers tend to be intensely loyal, alert and clever, often attaching closely to one person and staying wary of strangers. Most have huge stamina and a strong urge to chase and herd, which can show up as nipping at children, bikes or other pets. With training and a real outlet for that drive, many are devoted, hardy companions, and they often live 12 to 16 years.