Australian Cattle Dogs, often called Blue Heelers, were developed in nineteenth-century Australia to drive cattle over long distances in heat and dust. They nip at the heels of stock to move it, which is where the name comes from. Adults are compact and muscular, usually 35 to 50 pounds, with a short, weatherproof coat in blue or red speckle.
Heelers tend to be loyal, clever and wary of strangers, and many attach closely to one person. Their stamina and herding instinct can show up as chasing bikes or nipping at kids and other pets, so training and early socialization matter. In Newark's busy streets, a Heeler with steady routines and plenty of mental work can be a devoted, hardy companion that often lives well into its teens.