The Australian Stumpy Tail Cattle Dog is a bobtailed, medium sized breed of dog. The Australian Stumpy Tail Cattle Dog was developed in Australia to herd cattle, and descends from crosses between European herding dogs and the Australian dingo. The Australian Stumpy Tail Cattle Dog descended from Smithfield Cattle Dogs in England, which were brought to Australia in the early 19th century and crossed with the dingo. Records of working dogs are scarce from this time period, and there are several different accounts of the breed's development. One is that a drover named Timmins from Bathurst, New South Wales, crossed the Smithfield dogs with the dingo, producing a type of working dog called Timmin's Biters. In order to mute their dingo characteristics and make the dogs easier to handle, further crosses were made with Scottish smooth collies, producing speckled red and blue dogs that were often born tailless.