Cattle Dog is a shelter label more than a single breed. Most dogs carrying it are Australian Cattle Dogs, known as Blue or Red Heelers, or mixes with one. The Australian Cattle Dog was developed in nineteenth-century Australia to drive cattle over long distances by nipping at their heels, which explains the stamina, toughness and independent thinking.
Most are medium-sized, muscular and short-coated, around 30 to 50 pounds. Many bond closely with their people, stay reserved with strangers, and want something to do. Texas Heelers and crosses with Border Collies or Labs can look and act a bit different, so the dog in front of you matters more than the label.