Cattle Dog is a shelter label more than a single breed. Most dogs listed this way are Australian Cattle Dogs, called Blue or Red Heelers, or mixes with one, though Texas Heelers and crosses with Border Collies or Labs turn up too. The Australian Cattle Dog was developed in nineteenth-century Australia to drive cattle by nipping at their heels.
Expect a medium, muscular dog, usually 30 to 50 pounds, with a short double coat, a sharp mind and plenty of stamina. Many bond closely with their people, stay reserved with strangers and get restless without a job. Lifespans commonly run 12 to 16 years. A mix can differ from the typical heeler in size, coat and energy, so each dog deserves a fresh look.