More on the history of ear cropping the Doberman Pinscher:
When Herr Louis Dobermann created the Doberman Pinscher, he attempted to breed a dog with a naturally pricked (erect) ear and a naturally bob tail. Ears are cropped on Dobermans for health, cleanliness and looks. Most breeders / veterinarians crop ears when the pup is between 7 and 9 weeks of age, so if you prefer an uncropped ear, express your preference to the breeder early. Dobermans are shown uncropped in England and Australia, but very seldom in Canada and the United States. Cropped ears can add a wonderful look to the Doberman, but if not carefully handled, they may not stand properly .