Did you know? The Australian Stumpy Tail Cattle Dog is not an Australian Cattle Dog with a docked tail. Rather, this breed is a naturally bob-tailed dog.
The breed standard asks for a natural length that doesn't exceed 4 inches. A tail that exceeds 4 inches is considered a severe fault.
Despite their name, some puppies may be occasionally born with a long tail. https://en.wikipedia.org/wiki/File:Australian_Stumpy_Tail_Cattle_Dog.jpg