Given that some countries are now banning docking, breeders are again attempting to select for dogs with the genes for natural bob tails. (findapurebred.com)
Although some are born with naturally bobbed tails, most short of the short - tailed dogs in this breed have been docked, often for improved hygiene and to prevent injury in working dogs. (wileypup.com)
Many of them have naturally short bobbed tails. (reference.com)