The practice of docking began primarily as a preventive measure for injury among working dogs.
Docking is now primarily performed for purely cosmetic reasons, and some breeds traditionally have their tails cropped anywhere from slightly to almost entirely.[8] Many countries now ban cropping and docking for cosmetic purposes, including Australia, parts of Canada, the majority of the European countries (Austria, Greece, Finland, Netherlands, Italy, the Czech Republic, Turkey, Poland, Slovakia, England, Scotland, Slovenia, Ireland, Norway and Sweden), while others, such as the United States, permit it.
As of 2008, the practice is opposed by the American Veterinary Medical Association.[9] Some breeders also prefer to declaw the dogs to prevent future injuries caused by scratching, or in the case of dewclaws, ingrown and ripped-off nails.
Docking and declawing procedures are usually performed within the first few days after birth, by a veterinarian, or by an experienced breeder.