The Border Collie presents an athletic, balanced appearance that immediately suggests speed, agility, and stamina necessary for tireless herding work. Standing 18-22 inches at the shoulder and weighing 30-55 pounds, this is a medium-sized dog built on rectangular proportions where body length exceeds height slightly, creating the efficient outline that facilitates sustained working movement. The overall impression conveys a dog of great athleticism without excessive substance, combining strength with grace, and power with agility in perfect balance.
The head is proportionate to body size, presenting the intelligent, keen expression that characterizes the breed. The skull is fairly broad and flat between the ears, with moderate width that provides ample room for the intelligence Border Collies are renowned for possessing. The length from occiput to stop roughly equals or slightly exceeds the length from stop to nose tip, creating balanced head proportions. The stop is moderate but definite, clearly visible in profile. The muzzle tapers slightly from stop to nose, appearing neither snipey nor blocky, with strong underjaw evident when viewed from any angle.
The nose is large with well-opened nostrils, typically black in color though red or brown noses occur in dogs with red-based coat colors. Lips are tight and black-pigmented in most dogs, fitting cleanly without flews or excessive tissue. The teeth meet in scissors bite where upper incisors overlap lower incisors closely, with complete dentition preferred. The jaw muscles are well-developed, providing the strength necessary for the occasional nipping required in herding work without excessive prominence that would indicate coarseness.
Eyes represent one of the breed's most characteristic and expressive features, set well apart and moderate in size with oval shape. Eye color varies widely depending on coat color genetics, with brown being most common but blue, amber, or particolored eyes (one blue, one brown, or split coloring within a single eye) appearing in merle and other color patterns. Regardless of color, expression should be intelligent, alert, eager, and full of interest, reflecting the breed's intense mental focus. The "herding eye," an intense, hypnotic stare used to control livestock, is highly developed in working Border Collies and evident even in young puppies with strong herding instinct.
Ears are medium in size, set well apart, and carried erect or semi-erect with tips folding forward. Some individuals carry ears fully erect while others show one erect and one tipped, or both tipped forward at approximately one-quarter to one-half of the ear length. Ear carriage adds to the alert, attentive expression, though precise carriage varies among individuals without affecting working ability or breed type. Ears should be sensitive and mobile, responding to sounds and movement with quick adjustments that demonstrate the dog's constant awareness of surroundings.
The neck is strong and muscular, of good length, and slightly arched, blending smoothly into well-laid-back shoulders without abrupt angles or transitions. The neck allows the head to be carried in multiple positions appropriate to herding work, from lowered during intense stalking to raised during scanning for stock movement. The throatlatch is clean without excessive skin or dewlap, maintaining the athletic appearance characteristic of the breed.
Body construction demonstrates the strength and stamina required for sustained herding work over varied terrain. The chest is deep, reaching to the elbow, with well-sprung ribs providing adequate space for heart and lung capacity necessary for endurance. The body appears slightly longer than tall when measured from point of shoulder to point of buttock compared to height at withers, creating rectangular proportions. The back is level and firm from withers to croup, demonstrating proper muscling and structural soundness. The loin is moderately short, deep, and muscular, blending into slightly sloping croup. The underline shows moderate tuck-up, neither excessive nor absent.
Forequarters display the balanced angulation necessary for efficient movement. Shoulders are well-laid-back at approximately 45 degrees, forming good angle with upper arm. The forelegs are straight and parallel when viewed from front, with sufficient bone for strength without coarseness. Elbows are held close to the body without restriction. Pasterns are slightly sloped when viewed from the side, providing flexibility and shock absorption without weakness. Feet are compact and oval, with well-arched toes and thick pads. Nails are short and strong, maintained through regular trimming or natural wear from work and exercise.
Hindquarters provide the power and drive necessary for working over varied terrain for extended periods. The hindquarters are broad and muscular, showing powerful thighs and well-bent stifles. The hocks are strong and well let down, positioned perpendicular to the ground when the dog stands naturally. When viewed from behind, the rear legs are straight and parallel. The feet are oval and compact with well-arched toes and thick pads, matching the front feet in construction.
The tail is moderately long, set on low, reaching at least to the hock joint, with the last vertebra reaching the hock when the tail hangs naturally. The tail is well-furnished with hair, particularly on the underside, creating a "fox brush" appearance. Tail carriage varies with the dog's mood and activity level, carried low with slight upward swirl at rest, raised when excited but never carried over the back except in young puppies. Working Border Collies often carry tails low even when working, reflecting concentration and focus.
The coat comes in two varieties: rough and smooth. The rough coat is medium in length, flat to slightly wavy in texture, forming feathering on the forelegs, chest, belly, and haunches. The hair on the face, ears, front of legs, and rear pasterns is short and smooth. The smooth coat variety has shorter hair overall, coarser in texture, with minimal feathering but retaining the weather-resistant double coat structure. Both varieties feature dense undercoat that provides insulation, though the undercoat density varies seasonally.
Color patterns in the Border Collie demonstrate remarkable variety, with virtually any color or combination acceptable except solid white or predominantly white (more than 50 percent). Common patterns include black and white, red and white, blue merle, red merle, tricolor, sable, and solid colors with or without white markings. White typically appears on the face (blaze), collar, chest, legs, belly, and tail tip, creating the classic Border Collie appearance. Merle patterns create mottled coloring with irregular patches of diluted and full-strength pigment. This genetic diversity reflects the breed's working heritage where function outweighed appearance, allowing all colors provided the dogs could work effectively.
Affectionate with Family
★★★★★
The Border Collie forms strong bonds with family members and shows affection, though often in focused, purposeful ways rather than constant cuddling. This breed's devotion manifests through working partnership, attentiveness to commands, and desire to remain near family members during activities.
Good with Young Children
★★★★★
The Border Collie can coexist with children but may attempt to herd them through circling, nipping at heels, or controlling movements. Proper training and adequate exercise reduce herding behaviors, while supervision ensures interactions remain appropriate given the breed's intense energy and work drive.
Good with Other Dogs
★★★★★
Border Collies generally tolerate other dogs when properly socialized, though their intense focus and work drive can create tension with dogs having different play styles. Some individuals show selective friendliness, preferring work over social play with unfamiliar dogs.
Shedding Level
★★★★★
The Border Collie sheds moderately year-round with heavier seasonal shedding during spring and fall coat changes. Regular brushing manages loose hair effectively, though this breed produces noticeable amounts of fur requiring consistent grooming attention.
Coat Grooming Frequency
★★★★★
The Border Collie requires regular brushing 2-3 times weekly to manage shedding and prevent matting, with daily brushing beneficial during heavy shedding periods. The rough coat variety needs more attention than smooth-coated dogs, particularly around feathering areas.
Drooling Level
★★★★★
The Border Collie does not drool excessively, maintaining a clean mouth and face during normal activities. This characteristic makes the breed appealing to owners who prefer dogs without moisture or saliva concerns typical of some other breeds.
Coat Type
★★★★★
The Border Collie comes in two coat varieties: rough (medium-length with feathering) and smooth (shorter, coarser texture). Both feature weather-resistant double coats with dense undercoat providing insulation and protection during outdoor work in varied conditions.
Openness to Strangers
★★★★★
The Border Collie typically displays reserved behavior toward strangers, observing carefully before engaging. This natural caution serves the breed's working heritage, though proper socialization prevents excessive wariness from developing into problematic fearfulness or reactivity.
Playfulness Level
★★★★★
The Border Collie shows high playfulness, particularly enjoying games involving mental challenges, chasing, retrieving, and problem-solving. However, play often carries purposeful intensity rather than casual fun, with the breed preferring structured activities over aimless romping.
Watchdog/Protective Nature
★★★★★
The Border Collie alerts family members to unusual activities through barking but typically lacks aggressive protective instincts. This breed focuses more on work and responsiveness to handlers than territorial guarding, though individual temperament varies based on breeding lines.
Adaptability Level
★★★★★
The Border Collie adapts poorly to sedentary lifestyles or environments lacking mental stimulation and physical activity. This breed thrives with active families providing consistent work, training, or sport participation, struggling in situations offering inadequate outlets for intense energy and intelligence.
Trainability Level
★★★★★
The Border Collie ranks among the most trainable breeds in existence, learning commands rapidly and executing them with precision. This exceptional intelligence, combined with intense focus and desire to work, makes the breed outstanding in obedience, agility, herding trials, and virtually all canine sports.