The Stumpy Tail Cattle Dog descended from original Smithfield and Dingo dog. This created a red bobtail that was later crossed with the Blue Merle Smooth Coated Collie. Through selective breeding of the bobtail dogs, breeders were able to establish an absence of a tail in the dog. The Stumpy Tail Cattle Dog is held in high esteem in its native country of Australia for its natural ability in working and controlling cattle.