Smooth Collie: the Lassie-line herder in a short, low-maintenance coat

On a working farm in the hills of western Oregon, there is a dog that earns its keep on weekends with a whistle. Two short blasts and the dog circles the flock from the left; one long, low note and it brings the sheep back to the pen without losing a single ewe in the brush. There is no needless barking, no headlong sprint. Just that fluid movement, glued to the flank of the flock, that ranchers recognize on sight. What most people miss is that this dog does not have the long, flowing coat the whole world knows from Lassie. Its coat is as short as a Labrador's.

The Rough Collie, with its spectacular mane and decades of screen time, has nearly eclipsed its short-coated sibling. Both varieties share the same Scottish and border-country origin, the same loyal and sensitive temperament, and in the AKC they are registered as a single breed (Collie) in two coat varieties, Rough and Smooth, shown separately. The difference is the coat and, in part, the fame. The Rough gets the spotlight; the Smooth gets the work done.

What does it look like?

The Smooth Collie is a large, athletic dog of well-balanced proportions. Males stand 22 to 24 inches (56 to 61 cm) at the shoulder and weigh 44 to 64 lb (20 to 29 kg); females stand 20 to 22 inches (51 to 56 cm) and weigh 40 to 55 lb (18 to 25 kg). The silhouette is elegant, with soft lines but no heaviness: a well-developed chest, a firm loin, and powerful hindquarters that explain the stamina in the field.

The head is long and tapered, a smooth wedge that narrows from the ears to the muzzle. The eyes are almond-shaped and dark brown in tricolor and sable dogs (blue in blue merles), and they carry the expression breed books describe as "questioning," somewhere between alert and understanding. The ears have the high set characteristic of collies: at rest, the upper third tips slightly forward.

The coat is what sets this herder apart from its more famous relative. Short, dense, and harsh to the touch on the outside, with a soft, woolly undercoat beneath. There is no feathering, no mane, no trousers. There is a slight ruff around the neck and on the hindquarters, but nothing like the Rough's. The breed standard recognizes the same colors in both varieties: sable and white (golden to mahogany with white), tricolor (black, white, and tan), blue merle (a bluish-gray mix with black and tan), and white. The white pattern appears on the neck, chest, legs, and tail tip.

What is its temperament like?

The Smooth Collie is a deeply bonded dog. It connects intensely with its family and shows it in concrete ways: it follows people from room to room, alerts to any arrival or out-of-routine noise, and tunes its energy to the emotional state of the household with a sensitivity that surprises owners coming from less environmentally reactive breeds.

With strangers it is reserved, never aggressive at first meeting. It needs time to size up a new person, and that time can run from several minutes to several encounters. This is a calm reserve, the manner of a dog that watches before it approaches, not a dog that backs away frightened. Once it decides someone is worth trusting, it folds that person into its circle without fuss.

With the children of the family it does very well. The patience and tolerance for handling have been in the breed since its history herding mixed flocks, including young and unpredictable animals. Around unfamiliar children or in very chaotic settings, the reserve toward strangers can show; nothing early socialization cannot manage.

Trainability is very high. It learns long sequences, responds well to clicker work and positive reinforcement, and enjoys activities that involve working with its owner: agility, competition obedience, herding, flyball. This is a dog that gets bored with nothing to process. Boredom in this short-coated Scottish herder tends to surface as continuous barking or repetitive behaviors like shadow-chasing or pacing, signs that it needs more mental stimulation than physical.

What health problems does it have?

Here it pays to be direct: the Smooth Collie has a health profile that demands active management before you buy the puppy, not after. Genetic tests exist for the two most prevalent conditions, and a serious breeder runs them on every breeding dog without exception.

Collie eye anomaly (CEA). This is the most common inherited condition across the entire collie family. It affects the development of the choroid, the vascular layer of the eye, and ranges from mild cases with no functional impact to retinal detachment with partial or total vision loss. The genetic test for CEA is available and is standard in any responsible breeding program. A puppy whose parents have not been tested for CEA is a puppy with no reliable information about its eye risk.

Progressive retinal atrophy. A collie-relevant form (typically tested as rcd2 or related CRD variants by specialty labs) causes progressive degeneration of the retina's photoreceptors. The process takes months or years to reach complete blindness, and there is no treatment. The DNA test identifies carriers and affected dogs before symptoms appear.

MDR1 sensitivity. This point deserves special attention because it has immediate practical consequences. The MDR1 mutation (also identified as ABCB1) affects the protein that controls how certain drugs cross the blood-brain barrier. Dogs homozygous for the mutation cannot properly clear ivermectin, loperamide, vinblastine, and several other compounds, and can suffer severe toxicity from doses a dog without the mutation tolerates without trouble. Ivermectin, found in very common parasite preventives, is the most frequent cause of crises in collies with MDR1. The test is simple (a cheek swab or blood), runs through labs like the Washington State University Veterinary Pharmacology Lab, and costs roughly $60 or less. Without that result, you should not give a Smooth any parasite product containing ivermectin or milbemycin at an unadjusted dose.

Epilepsy. Moderate prevalence in the breed, with a probable hereditary basis that is not yet fully characterized genetically. Episodes usually appear between the first and third year of life. Management with phenobarbital or potassium bromide works well in most cases.

Dermatomyositis. An inflammatory disease affecting skin and muscle, appearing in young puppies. The skin lesions on the face, ears, and limbs can be mistaken for mange or ringworm at first. Severe cases affect the muscles of chewing and the esophagus.

Documented lifespan is 12 to 14 years with proper care. The number improves when genetic testing allows the conditions to be caught and managed before they compromise quality of life.

How much exercise and grooming does it need?

The Smooth Collie needs 60 to 90 minutes of physical activity a day, split across two or three outings. This is not a breed that requires distance running or high-intensity sports, but it does need real movement: retrieve games, off-leash walks in open country, obedience or agility sessions. In an apartment it can manage on long walks and daily mental stimulation, though its quality of life clearly improves with access to a yard or a large green space.

The short coat is a clear maintenance advantage. A 10 to 15 minute brushing once or twice a week with a rubber curry or firm-bristle brush is enough to pull out dead hair and keep the undercoat in good shape. During seasonal sheds (spring and fall) the amount of loose hair rises noticeably; in those weeks it helps to brush every two or three days. Bathe every six to eight weeks with a gentle dog shampoo for short coats.

It needs no professional grooming. A weekly ear check, dental care three times a week, and a monthly nail trim round out the routine maintenance.

How much does a Smooth Collie cost in the US?

A puppy from a breeder in good standing with the Collie Club of America runs $1,200 to $2,500 in 2026. The breed has a small breeder base in the US (considerably smaller than the Rough Collie's), which means less supply and less price variation. Smooth Collies turn up in collie-specific rescue groups too, where adoption fees typically run $200 to $500.

Before closing a purchase, there are five questions any serious breeder should answer without hesitation:

1. CEA and PRA results on both parents, available to view.
2. MDR1 test on both parents, with documented genotype.
3. AKC registration and a verifiable pedigree.
4. Release age no younger than 8 weeks, with a documented socialization protocol.
5. After-sale support: the breeder should be able to guide you on MDR1 management from day one.

Estimated annual cost for a healthy adult in the US:

Item	Annual cost
Premium mid-range food	$500-750
Routine veterinary care (exams, vaccines)	$350-600
Parasite preventives (adjusted to MDR1 genotype)	$120-250
Pet insurance	$400-800
Gear (harness, toys, bed, brush)	$150-300
Total	$1,500-2,700

This assumes no major illness arises during the year.

Quick reference: the Smooth Collie

Block	Item	Value
Identification	Canonical name	Collie (Smooth)
	Other names	Smooth Collie, short-coated Collie
	Geographic origin	Scotland / Anglo-Scottish border
	FCI standard	No. 296
	FCI group	1 (Sheepdogs and Cattledogs)
	FCI section	1 (Sheepdogs)
	AKC group	Herding Group
	AKC recognition	Recognized as one breed in two coat varieties
Physical	Male weight	44-64 lb (20-29 kg)
	Female weight	40-55 lb (18-25 kg)
	Male height	22-24 in (56-61 cm)
	Female height	20-22 in (51-56 cm)
	Coat type	Short, dense, harsh; soft woolly undercoat
	Color varieties	Sable and white, tricolor, blue merle, white
Health	Lifespan	12-14 years
	Collie eye anomaly (CEA)	High prevalence; DNA test standard in breeding dogs
	Progressive retinal atrophy	DNA test available; breeding dogs should be tested
	MDR1 sensitivity	Test essential; ivermectin contraindicated without genotype
	Epilepsy	Moderate prevalence; appears at 1-3 years
	Dermatomyositis	Low prevalence; affects young puppies
Temperament	Energy level	Moderate to high
	Trainability	Very high
	Barking level	Moderate (alerting breed)
	Reactivity to strangers	Reserved but not aggressive
	With children	Good (especially over age 5)
	With other dogs	Good with socialization
	With cats	Possible with gradual introduction
Lifestyle	Recommended daily exercise	60-90 minutes
	Apartment suitable	Conditional (with long daily walks)
	Heat tolerance	Moderate
	Cold tolerance	Good
	Brushing	1-2 times a week (more during shed)
	Professional grooming	Not needed
US market	Puppy price 2026	$1,200-2,500
	Rescue availability	Low (uncommon in adoption)
	Estimated annual cost	$1,500-2,700

Is the Smooth Collie for you?

It fits if you want a family dog that is balanced and trainable, loyal and sensitive, willing to work with you but without the extreme intensity of a Border Collie. The condition is clear: you have to take on MDR1 management from day one and insist on CEA, PRA, and MDR1 testing before you sign anything. Without that information, you are buying a dog with avoidable unknowns. With it, you get one of the most versatile and long-lived Scottish herders in the herding group.

FAQ

What is the difference between the Smooth Collie and the Rough Collie? They share the same origin and temperament, and in the AKC they are the same breed registered in two coat varieties. The main difference is the coat: the Rough has a long, abundant coat with a characteristic mane; the Smooth has short, dense hair close to the body. In some venues the two varieties are shown separately. The Smooth needs far less coat maintenance.

Is this the Lassie breed? Lassie is a Rough Collie, the long-coated variety. The Smooth Collie shares its Scottish origin and temperament but not the mane that made that fictional dog famous. If you want exactly that look, the breed you want is the Rough Collie. If the coat does not matter to you and you prioritize temperament and simple maintenance, the Smooth has everything essential with much less brushing.

What is the MDR1 mutation and why does it matter so much in this breed? MDR1 (the ABCB1 gene) codes for a protein that acts as a pump expelling certain drugs at the blood-brain barrier. Collies homozygous for the mutation do not properly metabolize ivermectin (in many common parasite preventives), loperamide (an over-the-counter antidiarrheal), and other compounds. A dose normal for a dog without the mutation can trigger a severe neurological crisis in an affected Smooth. The test costs around $60 or less, is done once, and guides every drug decision for life.

Is it good with children? With the children of the family, it generally is. It is patient, tolerates active play, and adapts to the rhythm of the home. With unfamiliar children it can be reserved until it gets to know them. The usual supervision of child-dog interactions applies here as with any breed.

Can it live in an apartment? With conditions. It needs at least 60 to 90 minutes of daily activity outside the home; a short 20-minute walk is not enough. If those walks are guaranteed and you provide mental stimulation indoors (scent games, training sessions), the Smooth Collie adapts to apartment life without behavior problems. What does not work is confining it to a small apartment with no long outings.

Is it a suitable breed for inexperienced owners? With qualifications. The loyal temperament and high trainability make basic learning accessible to a first-time owner. Managing MDR1 sensitivity takes discipline: you have to flag the genotype to your veterinarian from day one and check any prescription before giving it. That single point demands attention, but it is not an insurmountable obstacle for a committed new owner.

How long does a Smooth Collie live? Documented lifespan is 12 to 14 years. With proper nutrition, regular veterinary care, and correct management of the hereditary conditions (especially annual eye screening and MDR1-adjusted medication), many dogs pass 13 years in good health.