The Rottweiler is a medium to large size breed of domestic dog. The dogs were known as "Rottweil butchers' dogs" (German: Rottweiler Metzgerhund) because they were used to herd livestock and pull carts laden with butchered meat and other products to market. The Rottweiler was employed in its traditional roles until the mid-19th century when railways replaced droving for herding livestock to market.
While still used in herding, Rottweilers are now also used as search and rescue dogs, as guide dogs for the blind, as guard dogs or police dogs, and in other roles. Although a versatile breed used in recent times for many purposes, the Rottweiler is one of the oldest of herding breeds. A multi-faceted herding and stock protection dog, it is capable of working all kinds of livestock under a variety of conditions.
The various German Rottweiler Clubs amalgamated to form the Allgemeiner Deutscher Rottweiler Klub (ADRK, General German Rottweiler Club) in 1921. This was officially recorded in the register of clubs and associations at the district court of Stuttgart on 27 January 1924. The ADRK is recognised worldwide as the home club of the Rottweiler.
The coat consists of an outer coat and an undercoat. The outer coat is of medium length, coarse, dense and flat. The undercoat should be present on the neck and thighs. The undercoat must not show through the outer coat. Rottweilers living in hot climates may have acclimatised and may be missing the undercoat. Rottweiler coats tend to be low maintenance, although they experience heavy shedding before their seasons (females) or seasonally (males).
The color and markings of a Rottweiler are very distinctive. A Rottweiler is always, by any breed club standards, black with well-defined mahogany or rust-colored markings that do not take up more than ten percent of the dog's body color. All Rottweilers standard to AKC specifications have one mahogany dot above each eye on the inner brow ridge, on the cheeks, one strip on each side of the snout; cheek markings do not cross over the bridge of the nose, the top of the nose should remain black.