Australian Cattle Dogs, also called Blue Heelers or Queensland Heelers, were developed in nineteenth-century Australia to drive cattle over long distances in heat and dust. Settlers crossed collie-type herding dogs with dingoes to produce a quiet, tough worker that nips at the heels of stock. The result is a compact, muscular dog of roughly 35 to 50 pounds with a weather-resistant coat in blue or red speckle.
Heelers are quick learners with a strong urge to work, chase and herd. That can show up as nipping at heels, bikes or other pets if the dog has no outlet. Many are protective of their home, and they often attach closely to one person. With training and plenty of activity they make hardy companions, and many live well into their teens.