Ingrown Or Corkscrew Tails
One of the most distinguishing features of the Bulldogs, either English or French is their unique very small, often very kinky or corkscrew tail. This is a breed trait and while common is typically considered a fault or must be clearly defined as a screwed tail with definite kinks. A corkscrew tail may also be called an ingrown or internalized tail and is not as commonly noted in any other breed other than the Bulldog. Occasionally a Shar Pei or Bichon Frise may have what is known as a corkscrew tail or pig tail, but this is typically considered a disqualifying fault in these breeds.
The Bulldog often have a growth problem in the tail that actually leads to the tail growing inwards instead of outwards. This tends to leave a rather large, or small, depending on the age and size of the dog, cleft or indentation just where the tail would normally be. [...]