The Blue Heeler is also known as Australian Cattle dog (ACD), Australian Heeler, Hall's Heeler and Blue Heeler. It is a typical herding dog that was developed in 19th century in Australia when an Australian farmer crossed two herding dog breeds to produce Hall's Heelers. The dogs were made available for public and were subsequently developed into two modern breeds, the Australian Cattle Dog and the Australian Stumpy Tail Cattle Dog.
The Blue Heeler is a medium sized working dog with great endurance and stamina. It is known to be able to work alone all day long without any aid in droving the sheep.
The dog appears to be compact, strong and symmetrically built. The head is strong, proportioned to body with a broad skull. The muzzle is medium length with black nose. Oval shape dark brown eyes are medium size and pricked ears are moderately small and broad at the base. The neck and shoulders are strong and muscular; the forelegs are straight and parallel and the feet is round and arched. The breed sports a double coat that is water-resistant and comes in two primary colors; the blue and the red speckle. The dog stands between 17 to 20 inches and weighs between 44- 60 pounds respectively.
The Blue Heeler is recognized by major kennel clubs including AKC, FCI, CKC, UKC, DRA and many others.