General Appearance
The ideal Rottweiler is a medium-large, rebust and powerful dog, black with clearly defined rust markings. His compact and substantial build denotes strength, agility and endurance. Dogs are characteristically more massive throughout with large frame and heavier bone than bitches. Bitches are distinctly feminine, but without weakness of substance or structure.

Size,Proportion,Substance
Dog: 24 inches to 27 inches. Weight can very from 90 to 130 pounds.
Bitches: 22 inches to 25 inches. Weight can very from 70 to 110 pounds with preferred size being midrange of each sex. Correct proportion is of primary importance, as long as the size is within the standard's range.

The
length of body from prosternum to the rear-most projection of the rump, is slightly longer than the height of the dog and the withers, the most desirable proportion of the height to lenght being 9 to 10. The Rottweiler is neither coarse nor shelly. Depth of the chest is approximately fifty percent (50%) of the height of the dog. His done and muscle mass must be sufficient balance his frame, giving a compact and very powerful appearance.
Serious Faults: Lack of proportion, Undersized, Oversized, reversal of sex characteristics ( bitches dogs, doggy bitches).

Head 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.

Eyes of medium size, almond shape with well-fitting lids, moderately deep-set, neither protruding nor receeding. The desired color is a uniform dark brown.
Serious Faults: Yellow (bird of prey) eyes, eyes of different color size, hairless eye rim.

Disqualification: Entropion, Ectropion.

Ears of medium size, pendant, triangular in shape: when carried alertly the ears are level with the top of the skull and appear to broaden it. Ears are to be set well apart, hanging forward with the inner edge lying tightly against the head and terminating at approximately mid-cheek.
Serious Faults: Improper carriage (creased, folded or held away from cheek/head)

Muzzle-bridge is straight, broad at the base with slight tapering towards tip. The end of the muzzle is broad with well developed chin. Nose is broad rather than round and always black. Lips-always black:corners closed: inner mouth pigment is preferred dark.
Serious Faults: Total lack of mouth pigment ( pink mouth)

Bite & Dentition- Teeth 42 in number (20 upper: 22 lower), strong, correctly placed, meeting in a scissors bite: lower incisors touching inside of upper incisors.
Serious Faults: Level bite: any missing teeth.
Disqualification's: Overshot, undershot (when incisors do not touch or mesh): wry mouth: two or more missing teeth.

Neck, Topline, Body
Neck-
Powerful, well muscled, moderately long, slightly arched without loose skin.
Topline- The back is firm and level, extending in a straight line from behind the withers to the croup. The back remains horizontal to the ground while the dog in moving or standing.
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 lenth 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's: Unilateral cryptorchid or cryptorchid males.

Tail-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.

Forequarters- Shoulder blade is long and well laid back. Upper arm equal in length to the shoulder blade, set so elbows are well under body. Distance from withers to elbow and elbow to ground in 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.

Hindquarters- Angulation of hindquarters balances that of forequarters.

Upper Thig   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 yo 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 and black.Dewclaws must be removed.

Coat-Outer coat
is straight, coarse, dense, of medium length and lying flat. Undercoat should be present on the neck and thighs, but the amount is influenced by climatic conditions. Undercoat should not show through outer coat. The coat is shortest on the head, ears and legs, longest on breaching. The Rottweiler is to be exhibited in the natural condition with no trimming.
Fault: Wavy coat
Serious Faults: Open, excessively short, or curly coat: total lack of under-coat: any trimming that alters the length of the natural coat.
Disqualification's: Long coat..