American standard breed English Mastiff

General form. The English Mastiff is a large and massive, but at the same time symmetrical and compact dog. It gives the impression of grandeur and dignity. Males are usually more massive. In females, a smaller size is not considered a defect in the case when, with its powerful addition, it is compact enough. Dogs with distinctive standard features and strong build with normal weight achieve high marks.


Growth: In males it should not be less than 74 centimeters, in females less than 68 cm.

Defects: Growth at withers less than indicated limits.

Proportions: Rectangular format. The length of the body from chest to tailbone is slightly greater than the height at the withers. The impression of a large dog is the depth of the chest, not the length of the legs.

Addition: massive, bony, with a powerful muzzle. Desirable large depth and width of the shell.
Defects: frail physique and flat ribs.

English Mastiff HEAD

From all sides the impression of massiveness. Particularly preferred large head width.

Eyes: widely spaced, medium in size, never protruding.

Expression: wary but friendly. Eye color is brown, the darker the better. The third eyelid is not visible. Light eyes and aggressive expression are undesirable.

Ears: small and proportional to the skull. V-shaped with rounded ends. The ears are rather thin, set at the upper lateral corners of the skull, their bend continues the line of the upper part of the head. At rest, tightly pressed to the head. Ears should be darker in color, the darker the better, matching the color of the mask.

Skull: wide and slightly flattened between the ears, forehead slightly arched with a lot of wrinkles, which are especially clearly visible when the dog is alert. Brow arc slightly elevated. The muscles of the head are well developed, especially the temporal and masticatory muscles are distinguished. The line, drawn across the skull, is a flattened curve with a small furrow in the middle of the forehead, which begins between the eyes and goes to the middle of the skull cap. The transition from the forehead to the nose (stop) is well defined between the eyes, but not too sharp. The muzzle is half the length of the skull, therefore, the head can be divided into three parts, one of which falls on the muzzle, and the other two on the skull. In other words, the distance from the tip of the nose to the stop is half the distance between the stop and the occipital protrusion. The muzzle circumference (measured at mid-distance from the eye to the nose) refers to the circumference of the skull (measured in front of the ears) as 3: 5.

Muzzle: short and wide under the eyes, keeping the same width towards the nose. The muzzle is square, vertically cut off, that is, it forms a right angle with the back of the nose. The greatest depth of the muzzle is from the nose lobe to the lower jaw. The lower jaw is wide to the very end and slightly rounded. The mask is dark, the blacker the better.

disadvantages: sharp muzzle.

Nose: broad and always dark nose, the blacker, the better, with wide and flat nostrils, never pointed and not snub-nosed in profile.
Lips: diverging at an obtuse angle from the septum and sagging enough to create a square dog profile.

Fangs: strong and widely spaced. Jaws are powerful. A scissor bite is preferred, but a middle bite is not considered a disadvantage if the lower incisors are not visible from under the lips with the mouth closed.


Neck: powerful, very muscular, slightly arched, of medium length. The neck circumference is gradually increasing from the head to the shoulders. The neck is moderately “dry” (no pendulous skin).

Topline: in profile, the top must be straight, filled, by no means with a saddle or sharply chopped off immediately after the highest point of the sacrum.

Chest: wide, deep, round and well lowered between the forelimbs. It should reach at least the level of the elbows. The front should be deep and well-defined, the sternum reaches the level of the front ends of the shoulder blades. Ribs rounded. False ribs deep and well set.

Bottom line: belly and groin slightly matched.

Back: muscular, powerful and straight. Seen from behind, the croup is slightly convex.

Loins: broad and muscular.

Tail: planted at medium height, in the lowered state reaches hock joints or slightly lower. The tail wide at the base narrows towards the end, hangs evenly in a calm state, forms a small curve in movement, but is never raised above the back.


Shoulder blades and shoulders: Medium lean, powerful and muscular, without any tendency to loose. The degree of articulation of the joints of the front limbs strictly corresponds to the articulation of the rear.

Forearm: straight, strong, widely spaced, bony.

Elbows: are located parallel to the body.

Pasterns: strong and practically sheer.

Paws: large, round, lumpy, with arched fingers. Claws preferably black.


Wide set, strong and muscular hind limbs.

Shin: well developed, leading to a strong hock.

Knee: The bones are articulated at a medium angle, corresponding in height to the forelimbs.

Hind limbs: wide and parallel when viewed from behind. When the metatarsus are properly laid back and are perpendicular to the ground, then the vertical line, lowered from the very back of the limbs, should pass in front of the legs. This rule excludes straight hock joints, and since they correspond to the angles of the knee joints, it immediately excludes the insufficiently pronounced corners of the knee joints.

disadvantages: straight knee joints.

WOOLED COVER Breed English Mastiff

The outer coat is straight, hard, of medium length. The undercoat is dense, short and tight. Wool should not be so long as to create lines on the belly, tail and hind limbs.

disadvantages: long and wavy hair.


Apricot, fawn or brindle. Brindle color: fawn or apricot background is completely covered with very dark stripes. The muzzle, ears and nose of a dark color, the blacker the better, the same tone spreads to the eyes and surrounds the orbit. Allowed a small bright spot on the chest.

disadvantages: Too white chest or white spots on other parts of the body. Weak pigmentation of the mask, ears and nose.


Movements express strength and power. The hind limbs give a jolt, and the front limbs make a smooth step with a good extension. When moving, the limbs are carried out strictly forward, as the dog moves from walking to trot, the feet walk along the same centerline to maintain balance.


The combination of majesty and good character, courage and devotion. Preserving self-esteem - this is the correct behavior of the English Mastiff. Judges should punish shy and nervous animals and, on the contrary, encourage spectacular and self-confident dogs.



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