The Bouvier is a powerfully built, compact, rough-coated dog of rugged appearance. It gives the impression of size and strength without clumsiness or heaviness. Perhaps its most notable feature is the impressive head which is accentuated by a heavy beard and mustache. Although the practice of cropping both ears and tail are now mostly cosmetic, tails were originally docked to prevent injuries caused by herding and cart-pulling. The practice of cosmetic docking is currently opposed by the American Veterinary Medical Association. In the area of origin (Flanders, Belgium) cropping was made illegal in 2006.  The weight of males ranges from 80 to 120 pounds or 36 to 54 kilograms, slightly smaller for females.  They are powerfully built, with a thick double coat, which can be fawn, black, grey brindle, or "pepper and salt" in color. Bouviers are sometimes considered non-shedding, but in fact do lose hair, like all dogs. Most of the hair that they lose is caught within the double coat which results in matting. They require weekly brushing and combing to maintain the coat. In addition to weekly brushing, the coat should be trimmed approximately every 3–5 weeks if it is to be a show dog. Trimming requires practice to achieve the proper look.