Cattle Dog is a label more than a single breed. Most dogs listed this way are Australian Cattle Dogs, known as Blue or Red Heelers, or mixes with one, though Texas Heelers and crosses with Border Collies or Labs also turn up. The Australian Cattle Dog came from nineteenth-century Australia, where collie-type herders were crossed with dingoes to create a tough drover that moved cattle by nipping at their heels.
Most are medium-sized, muscular and short-coated, around 30 to 50 pounds, with a double coat that sheds moderately. They're sharp, independent and happiest with a job, which in Pasadena can be a trail routine, training games or puzzle toys. Mixes vary in size, coat and energy, so a dog's own behavior tells you more than the label does.