Labrador Retriever is a medium to large dog with a naturally gentle, lively, non-aggressive and intelligent personality Gao is a breed suitable for selection as a guide dog or other working dog, and is one of the top three non-aggressive dog breeds alongside the Golden Retriever and Husky. The Labrador is currently the most registered breed in the American Kennel Club.

1. General appearance and performance

Labrador Retriever is a structurally strong , medium-sized, slightly short (described below) dog. He has a sound, agile, perfectly balanced build that gives him the instinct to be a retrieving gun dog (Bird dog). He has the nature and character to hunt waterfowl or land prey for long periods of time in different environments. More competitive qualities and characteristics and a temperament that can be used as a family companion dog. These physical and psychological characteristics are suitable for breeding into a hunting dog with a stable temperament, which is sufficient for tracking work in different hunting environments.

Some of the most remarkable features of the Labrador are his short, dense, weather-resistant coat; an otter tail; with a broad skull and moderate forehead A chiseled head; powerful jaws; and friendly eyes convey his character, understanding, and great disposition.

Based on the above, a Labrador must be well-balanced for effortless movement on the field or field work. The appearance and qualities exhibited by a typical Labrador are cultured and elegant, not bulky and vulgar in physical terms. Labrador Retrievers were originally bred as gun dogs, so their structure and health were paramount.

2. Size, Proportion and Texture

Size - The height of the male dog is 22.5 inches to 24.5 inches (57.15cm~62.23cm),

The female dog is between 21.5 inches and 23.5 inches (54.61cm~59.69cm). Anything over or under the standard half-inch (1.27cm) is disqualified. The weight is acceptable within the standard range: 65 to 80 pounds (29.51kg ~ 36.32kg) for male dogs; 55 to 70 pounds (24.97kg ~ 31.78kg) for female dogs.

The minimum height ranges mentioned in the previous article do not apply to male or female dogs younger than twelve months of age.

Proportion - Slightly shorter; means that for a single dog, only his length is equal or slightly longer than his height. The distance from the elbow to the ground is the same as the distance from the elbow to the armour. The chest should extend to the elbows, but not noticeably deeper. The body must be of sufficient length to permit efficient free stride in a straight line; but should not be short and long or tall and slender.

Texture - The meat of the entire dog should be commensurate with the bones. A light, thin individual is a definite disadvantage; a relative disadvantage is a cumbersome, bulky individual. Labrador retrievers should be muscular and not overweight.

3. Head

Cranial - The cranial should be wide and well developed but not exaggerated. The skull and face (foreface or muzzle) should be in parallel planes of almost equal length, and there should be a suitable forehead. The forehead is slightly obvious, so the skull is not in a complete line with the nose. The brow bone then helps to mark the forehead. The head should be well-defined without fleshy cheeks (chee ks); there should be no bulge on the inside of the cheeks from the pronounced skull structure under the eyes. The skull should have some midline (due to depression); in the adult dog, the occipi tal bone is not obvious. The lips should not sag or be too tight, but extend toward the throat. So, a dog with a wedge-shaped head or an overly long head with a narrow muzzle and backbones is wrong, as is a dog with overly large cheeks. The jaws are strong and not rude. The muzzle is neither long and narrow nor short and thick.

Nose - The nose should be broad with well-developed nostrils. Nose color in black and yellow labradors should be black; chocolate nose color is brown. A regressed nose colour is a disadvantage, a thoroughly pink nose or a loss of its true colour is a disqualification.

Teeth - Teeth should be strong and normal, with a scissor bite, with the lower teeth set back but in contact with the inner edges of the upper teeth. Horizontal incisors are allowed, but not preferred. Poor engagement or sharp teeth up and down are serious mistakes. The best is the complete dentition, and the lack of molars or micromolars is a serious defect.

Ears - Ears should be moderately drooping close to the head, slightly above eye level, and slightly below the skull, well set back. The ears should not be too heavy or too large, but should be proportionate to the head cover and reach the inner edge of the eye when pulled toward the eye.

Eyes - Eyes should be friendly, intelligent and alert is a registered trademark of Labrador. Eyes are of medium size, well set, neither bulging nor sunken. Eye color should be dark brown in black or yellow dogs; light brown or brown in chocolate. Eyes with black or yellow eyes that are too harsh are not welcome. Dogs with black and yellow eye sockets are black, and chocolate is brown. Eye sockets without color are disqualified.

4. Neck, Topline, and Body

Neck - The neck should be of the right length to easily pick up prey. The neck should also be muscular, with a strong rise from the shoulders and a moderate arch. A short, thick or ewe neck is a disadvantage.

Topline - The back is strong and should be level from the neck to the buttocks when exercising or standing, however, the loin should exhibit elasticity for mobility.

BODY - The Labrador is slightly short, with well-curved ribs that taper to a moderately broad chest. The Labrador should not have a narrow chest; it should not be too broad chested like a bull dog with a depression between the front legs. The correct chest structure is due to the unrestricted swing of the forelegs by the rib end feet between the forelegs. A chest that is too wide or too narrow for efficient running and kinetic energy is not correct. Individuals with a flat chest side are not typical of Labrador Retrievers, and a round, barrel chest shape is also unacceptable. The underline is almost straight, with little or no underline in the adult dog. The loin should be short, broad and powerful, extending to the well-developed and powerful hindquarters. When viewed from the side, it shows a well-developed forechest, but not excessive.

Tail - The tail is a distinct feature, should be very thick at the base of the caudal junction, tapering gradually towards the caudal end, of medium length but not longer than the ankle joint. The tail should be devoid of long feathers and entirely covered with a short, dense mantle, so that this characteristically perfect expression is called 'otter tail'. The tail should be at the height of the topline when quiet or when moving. Perhaps to convey excitement, but it should not be rolled on the back. An extremely short or slender tail is a serious mistake. The tail is used to balance the line from the top of the head to the end. Tail clipping or other errors that alter tail length or nature are disqualifications.