The ideal Rottweiler is a medium large, robust and powerful dog, black with clearly defined rust markings. His compact and substantial build denotes great strength, agility and endurance. Dogs are characteristically more massive throughout with larger frame and heavier bone than bitches. Bitches are distinctly feminine, but without weakness of substance or structure.
Of medium length, broad between the ears; forehead line seen in profile is moderately arched; zygomatic arch and stop well developed with strong broad upper and lower jaws. The desired ratio of backskull to muzzle is 3 to 2. Forehead is preferred dry, however some wrinkling may occur when dog is alert. Expression is noble, alert, and self-assured.
Body - The chest is roomy, broad and deep, reaching to elbow, with well pronounced forechest and well sprung, oval ribs. Back is straight and strong. Loin is short, deep and well muscled. Croup is broad, of medium length and only slightly sloping. Underline of a mature Rottweiler has a slight tuck-up. Males must have two normal testicles properly descended into the scrotum. Disqualification-Unilateral cryptorchid or cryptorchid males.
Shoulder blade is long and well laid back. Upper arm equal in length to shoulder blade, set so elbows are well under body. Distance from withers to elbow and elbow to ground is equal. Legs are strongly developed with straight, heavy bone, not set close together. Pasterns are strong, springy and almost perpendicular to the ground. Feet are round, compact with well arched toes, turning neither in nor out. Pads are thick and hard. Nails short, strong and black. Dewclaws may be removed.
Outer coat is straight, coarse, dense, of medium length and lying flat. Undercoat should be present on neck and thighs, but the amount is influenced by climatic conditions. Undercoat should not show through outer coat. The coat is shortest on head, ears and legs, longest on breeching. The Rottweiler is to be exhibited in the natural condition with no trimming.
Angulation of hindquarters balances that of forequarters. Upper thigh is fairly long, very broad and well muscled. Stifle joint is well turned. Lower thigh is long, broad and powerful, with extensive muscling leading into a strong hock joint. Rear pasterns are nearly perpendicular to the ground. Viewed from the rear, hind legs are straight, strong and wide enough apart to fit with a properly built body. Feet are somewhat longer than the front feet, turning neither in nor out, equally compact with well arched toes. Pads are thick and hard. Nails short, strong, and black. Dewclaws must be removed.
Tail docked short, close to body, leaving one or two tail vertebrae. The set of the tail is more important than length. Properly set, it gives an impression of elongation of topline; carried slightly above horizontal when the dog is excited or moving.