screw-tail

screw-tail

inherited tail formation in some breeds of dogs with naturally short tails, e.g. British bulldog, in which there are usually multiple malformations of the coccygeal vertebrae producing a curled or otherwise distorted, stumpy tail. Called also ingrown tail.

screw-tail dermatitis
irritation and sometimes significant secondary infection occurring in the skin fold surrounding the base of a screw-tail. See also fold dermatitis.
References in periodicals archive ?
Traumas to the tail range from "happy tail"--injuries that occur when a dog repeatedly thumps his tail against a hard surface--to fractures, to breed-specific conditions such as screw-tail in Bulldogs, says surgical specialist James A.
Bulldogs with their curly tails can be predisposed to screw-tail, a skin infection that develops when the bones of the tail are abnormal.