Australian Cattle Dogs, also called Blue Heelers or Queensland Heelers, were developed in 19th-century Australia to move cattle over long distances, nipping at the heels to keep the herd going. The result is a compact, muscular, medium-sized dog of roughly 35 to 50 pounds with a weatherproof double coat in blue or red speckle. That coat suits a Joliet winter well, though it sheds heavily once or twice a year.
Heelers are alert, clever and loyal, often attached to one person and wary of strangers. Their herding instinct can show up as nipping at heels, chasing bikes or bossing other pets, which matters on busy sidewalks and trails. Many live 12 to 16 years, so adopting one is a long commitment. Each dog varies, and age, history and personality shape a Heeler's drive as much as breed does.