Australian Cattle Dogs, also called Blue Heelers, were developed in nineteenth-century Australia to move cattle across long, hot distances. They're compact, muscular dogs of about 35 to 50 pounds with a weatherproof double coat in blue or red speckle, and they move stock by nipping at heels.
Heelers are loyal, alert and sharp, and many attach closely to one person. That drive can turn into chasing bikes, nipping at ankles or herding other pets when a dog has too little to do. In Boise, where trails, the Greenbelt and river parks are spread across the city, an active adopter can give a Heeler a real outlet. Dogs vary, and a calm adult may be far mellower than a typical young one.