Cattle Dog is a catch-all label. Most dogs listed this way are Australian Cattle Dogs, often 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 as a tough drover that moved cattle by nipping at their heels.
Most are medium-sized, muscular and short-coated, usually 30 to 50 pounds, with a double coat that sheds moderately. They're sharp, independent and often wary of strangers. In Columbia, that means a dog that handles four seasons well but needs real work, such as long trail miles and training games, to stay happy. Mixes vary in size, coat and energy, so judge each dog by how it behaves, not by the label.