The Scotch Collie that nineteenth-century shepherds worked across the Scottish Highlands bore a family resemblance to the modern show Collie but was a rougher, more variable animal than today's refined specimens. The transition from working farm dog to elegant show breed reshaped the Collie's appearance significantly, particularly the head, which was lengthened and narrowed through selective breeding during the Victorian era. What remains constant between the old Scotch Collie and the modern breed is the fundamental structure of a lithe, athletic herding dog built for endurance over rugged terrain.
The modern Collie stands 22 to 26 inches at the shoulder, with males at the upper end of the range and females at the lower. Weight falls between 50 and 75 pounds, again with sexual dimorphism accounting for the range. The overall impression is of a dog that is longer than tall but balanced and graceful, with clean lines and an absence of coarseness. The breed should never appear heavy or cloddy. Every element of the physical structure reflects the demands of sustained movement across hilly ground.
The head is the breed's most refined feature and the element that has changed most dramatically from its Scotch Collie origins. It is lean and wedge-shaped, tapering smoothly from ears to nose when viewed from the front or in profile. The skull is flat between the ears, and the stop is slight but perceptible. The muzzle is smooth and rounded, never square or snipey, and the underjaw is strong but not prominently chiseled. The overall head proportions create a clean, blunted wedge that is balanced and well-proportioned to the body. The expression, which the breed standard emphasizes as one of the most important elements of correct breed type, should convey sweet alertness and quiet intelligence.
The eyes are medium-sized, almond-shaped, and set obliquely on the head. Dark brown is standard in sable, tricolor, and white dogs, while blue merles may have blue or merle-flecked eyes. The ears are three-quarters erect when alert, with the top quarter tipping forward, creating the characteristic ear set that contributes to the breed's attentive expression. Fully erect or fully dropped ears are faults.
The neck is long and arched, carrying the head with pride and flowing into well-laid-back shoulders. The chest is deep, reaching to the elbow, but not excessively broad. The ribs are well-sprung behind the shoulders and taper through the loin, creating a body that is athletic rather than barrel-shaped. The back is strong and level, with a slight rise over the loins. The overall frame supports the breed's smooth, effortless trotting gait, which should cover the ground with minimum visible effort.
The Rough Collie's coat is the feature that most immediately captures attention and the characteristic that made Victorian fanciers fall in love with the breed. It is an abundant double coat with a harsh, straight outer layer and a soft, dense undercoat. The coat is profuse around the neck forming a full mane, on the backs of the forelegs forming feathering, and on the hindquarters forming a generous frill. The face, ears, and lower legs carry short, smooth hair. The Smooth Collie wears a short, dense, flat outer coat with a generous undercoat, creating a sleek appearance that shows the breed's structural qualities more openly. Both varieties come in the same four recognized colors: sable and white ranging from golden to deep mahogany, tricolor of black with tan markings and white, blue merle of mottled blue-gray and black with tan markings, and white with colored head markings.
Affectionate With Family
★★★★★
The Collie bonds deeply to its household with an emotional attentiveness that borders on intuitive, tracking family moods and positioning itself close to its people throughout the day.
Good With Young Children
★★★★★
The breed's patience, gentleness, and instinctive protectiveness with children are well documented, earning it a longstanding reputation as one of the finest family dogs available.
Good With Other Dogs
★★★★☆
Collies generally coexist well with other dogs, lacking the dog-directed aggression seen in some breeds and typically approaching canine social interactions with tolerance and friendliness.
Shedding Level
★★★★☆
The Rough Collie sheds heavily year-round with dramatic twice-yearly coat blows that produce extraordinary volumes of loose undercoat. The Smooth variety sheds moderately.
Coat Grooming Frequency
★★★★☆
The Rough Collie requires thorough brushing two to three times weekly to prevent matting, with daily sessions during coat blows. The Smooth Collie needs only weekly brushing.
Drooling Level
★☆☆☆☆
The Collie's tight, clean lip line produces essentially no drooling under normal circumstances.
Coat Type
★★★★☆
The Rough variety carries an abundant double coat with harsh outer guard hairs and dense undercoat forming a dramatic mane, while the Smooth variety wears a short, flat double coat.
Openness To Strangers
★★★☆☆
Most Collies are initially reserved with unfamiliar people but warm up readily once they determine no threat exists, rarely displaying aggression toward strangers.
Playfulness Level
★★★★☆
The Collie engages in play with willing enthusiasm, particularly enjoying interactive games with family members and activities that engage its herding intelligence.
Watchdog/Protective Nature
★★★★☆
Alert and vocally responsive to changes in the environment, the Collie reliably announces visitors and unusual activity, though it is not a physically confrontational guardian breed.
Adaptability Level
★★★☆☆
The breed adapts to various living situations including suburban and rural homes, but its sensitivity to household stress and need for companionship require a stable, engaged environment.
Trainability Level
★★★★★
Highly intelligent, eager to please, and responsive to positive reinforcement, the Collie learns quickly and retains training reliably, making it one of the more trainable herding breeds.