Cattle Dog is a catch-all label. It usually means an Australian Cattle Dog, the Blue or Red Heeler, or a mix with one, though Texas Heelers and crosses with other herders or Labs get the name too. The Australian Cattle Dog came from nineteenth-century Australia, where collie-type herders were crossed with dingoes to create a tough drover that moves cattle by nipping at their heels.
Most are medium-sized, muscular and short-coated, around 30 to 50 pounds, with sharp minds and strong loyalty to their people. Many are reserved with strangers and want a job to do, whether that's a morning loop, a swim or a training session on the porch. Mixes vary in size, coat and energy, so watch how each dog actually behaves rather than relying on the label.