Breed · Collie

Collie Health: The Lifetime Screening Plan

Rough and Smooth varieties, twelve to fourteen good years, and two genetic tests worth running in the first month. The Collie health profile, read in order.

Rachel Howland, CVT (ret.)

Updated Apr 24, 2026 · 9 min read · Edited for Veta

The Collie is the breed the MDR1 gene is named around, which tells you most of what you need to know about the first month of ownership. Before any heartworm prevention, any sedation, any question about parasite treatment, you want a cheek swab from Washington State University's Veterinary Clinical Pharmacology Laboratory in the chart. After that, the health profile is gentler than the breed's reputation suggests. A Collie with clean CEA and MDR1 results, a reasonable OFA hip screen, and ordinary wellness discipline is a durable dog.

The Collie, in both the Rough and Smooth variety, is one of the better-documented breeds in the veterinary literature, partly because it's been studied as the archetype for MDR1 and CEA. Four items recur across authoritative sources: CEA, MDR1, hip dysplasia, and dermatomyositis. What follows is the four-stage screening plan. Sources are Merck Veterinary Manual, the Orthopedic Foundation for Animals, Washington State University's VCPL, the American College of Veterinary Surgeons, and Penn Vet's dermatology literature.

Where the Collie came from

The Collie is a herding-origin breed developed in the Scottish Highlands and later standardized in nineteenth-century Britain, made internationally famous by Queen Victoria's affection for the breed and later by the fictional Lassie. The Rough Collie has the long double coat familiar to most viewers; the Smooth Collie has a short single coat and is the same breed in every meaningful genetic and health sense. The herding origin accounts for the MDR1 and CEA inheritance pattern; the late-nineteenth-century standardization accounts for the relatively narrow gene pool that concentrates dermatomyositis and certain cancer risks.

Life stages and what to screen

Puppyhood (0 to 12 months)

Puppy visits have a specific agenda. At six to eight weeks, a full ACVO ophthalmology exam for CEA if the breeder hasn't already run one. MDR1 cheek swab sent to WSU's VCPL, or the breeder's result photographed and filed. First patella and hip palpation by six months. Any unusual skin lesion, particularly on the face, ear tips, or tail, gets evaluated promptly with dermatomyositis on the differential; the condition most often declares itself between two and six months of age, per the veterinary dermatology literature.

At home: socialization matters in any breed and pays well in a Collie. Twenty gentle strangers, three different dog sizes, and a handful of varied environments before fourteen weeks builds a calmer adult. Growth-plate discipline applies: wait for full-impact play until twelve to fourteen months, in line with American College of Veterinary Surgeons guidance on controlled exercise and slow growth in large-breed puppies.

Preventive this stage: core vaccines, MDR1 and CEA in the chart, growth-plate exercise plan, patella and hip baseline, prompt evaluation of any unusual skin lesion.

Young adult (1 to 4 years)

The young-adult Collie is usually the easiest clinic patient of their life. Baseline work: first CBC (the complete blood count, which covers red and white cells) and chemistry panel at age two, first OFA hips and elbows at age two if not done earlier, first professional dental at age two to three. Eye exams stay annual.

At home: weight control and a consistent exercise routine. The breed is moderate-energy; an hour of varied work daily plus mental engagement is plenty. The World Small Animal Veterinary Association body condition score is the scale most clinics use; a steady 4 to 5 out of 9 is the target.

Preventive this stage: annual bloodwork from age two, OFA baseline, annual dental, annual eye exam, coat maintenance if Rough (weekly brushing minimum), consistent exercise rhythm.

Mature (4 to 8 years)

The mature Collie tends to look younger than the age suggests. Hip changes, if present, show up as mild stiffness after rest or a subtle change in gait after hard work. Weight control is the largest variable; the veterinary orthopedic literature is consistent that body condition drives osteoarthritis progression more than any single supplement. Any new lump gets a needle aspirate rather than a watch-and-see; the aspirate is a $50 to $150 test that catches concerning cell types meaningfully earlier than monitoring.

Cardiac auscultation at every visit is standing practice. Dermatomyositis, if it's been controlled in puppyhood, often stays controlled in this window but can flare; any new skin lesion prompts a same-month visit rather than a wait.

Preventive this stage: continue annual bloodwork and dental, add cardiac auscultation every visit, monitor body condition, investigate new lumps promptly.

Senior (8+ years)

Senior Collies often age gracefully. Twice-yearly wellness exams become reasonable from age eight. Bloodwork stays at least annual with attention to renal and liver trend values. Dental care matters more as the dog ages, not less; AAHA's 2019 Dental Care Guidelines support well-monitored anesthesia in senior dogs as lower-risk than leaving severe periodontal disease untreated. Cognitive changes (canine cognitive dysfunction) become part of the conversation.

Preventive this stage: twice-yearly exams, bloodwork trend, dental maintained, MDR1 re-flagged for every new sedation, and a specialist referral network established before it's needed.

The preventive framework

A wellness visit is a pattern-catching visit. Bring a current weight, a one-line note on any change in behavior, appetite, gait, or skin, and the last bloodwork for trend reading. For a Collie, add the MDR1 result accessible in under a minute. Questions change by stage. Puppy: CEA cleared, MDR1 in the chart, growth-plate exercise plan in place? Young adult: baseline bloodwork, OFA hips, annual eye exam? Mature: any new lump investigated, weight trend, skin status? Senior: renal trend, cognitive changes, anesthesia conversation for any future dental?

The gentler dog the breed is

The Collie ends up being one of the easier large herding breeds to live with once the two genetic tests are filed and the wellness rhythm is built. The dogs I remember most clearly from the Albany clinic were seniors whose owners had kept the basics consistent for a decade and were still bringing in steady, pleasant, moderately slowing-down dogs at thirteen. That's the breed's usual trajectory when the framework is in place. The breed health map hub covers how to read any breed profile without spiraling. The insurance page walks through which plan features matter for a breed with known hereditary risk. The pet health records page covers the trend-tracking that makes senior Collie care work.

Questions owners ask about Collie health

How long do Collies live?

Twelve to fourteen years is the usual range for both Rough and Smooth Collies. Merck Veterinary Manual's herding-breed entries and breed-club cause-of-death surveys support the estimate. The breed does better than many large herding dogs on longevity, partly because selection pressure away from working has kept the frame lighter than in other large breeds. Collies who reach the upper end of the range are usually dogs whose owners caught the breed's two genetic flags (CEA and MDR1) early and kept ordinary wellness consistent.

What is Collie eye anomaly?

Collie eye anomaly (CEA) is a hereditary developmental disorder of the eye that affects herding breeds with Collie ancestry. It's the condition the breed is literally named for. Per the American College of Veterinary Ophthalmologists, CEA ranges from mild choroidal hypoplasia that doesn't affect vision to severe retinal detachment that does. The disease is congenital (present at birth), best diagnosed at six to eight weeks of age by a board-certified ophthalmologist. A mildly affected puppy lives a normal life; knowing about it early matters for breeding decisions and for future eye-exam interpretation.

Should I test my Collie for MDR1?

Yes, at the first wellness visit if the breeder didn't. MDR1 (multi-drug resistance 1) is a gene variant common in herding breeds, and the Collie is one of the most affected. Washington State University's Veterinary Clinical Pharmacology Laboratory maintains the drug list, which includes ivermectin at certain doses, loperamide, and some chemotherapy agents. The test is a cheek swab, runs about $70, and belongs in the chart before the dog needs any listed drug. A Collie with two affected copies needs dose adjustment or alternatives; a one-copy carrier usually tolerates normal doses but benefits from caution at higher ranges.

What is dermatomyositis in Collies?

Dermatomyositis is a hereditary immune-mediated disease of the skin and muscle that affects Collies and Shelties at elevated rates. Per Merck Veterinary Manual's dermatology section and the University of Pennsylvania's veterinary dermatology literature, lesions typically appear as skin inflammation on the face, ear tips, and tail around two to six months of age, sometimes progressing to muscle involvement. Severity varies; some dogs have mild lifelong episodic lesions, others have severe disease. Treatment is immunosuppressive and often effective. Any puppy Collie with unusual facial lesions or ear-tip sores should be evaluated promptly.

Do Collies get hip dysplasia?

At measurable rates, less severe than in some other large breeds but worth screening. The Orthopedic Foundation for Animals' breed statistics show the Collie with rates above canine baseline. Responsible breeders OFA-test hips and elbows on both parents before breeding. For the individual dog, symptoms usually appear as mild stiffness after rest in middle age rather than dramatic lameness. Weight control, measured puppy exercise until growth plates close around twelve to fourteen months (in line with American College of Veterinary Surgeons guidance on controlled exercise in large-breed puppies), and a baseline OFA radiograph at age two handle most of the management.

Are Collies good family dogs?

Historically yes, and the traditional reputation is largely accurate. The breed tends to be gentle, trainable, and bonded to people. The caveats are modest: the Rough Collie's coat requires regular brushing (the Smooth Collie's does not), and the breed's herding instinct can drive mild nipping at running children that responds well to training. The AVMA's breed-selection resources and the AKC's breed-specific guides align on the general case. A Collie in an active family with consistent training is usually an easy dog; the same dog in a sedentary household with no activity plan can develop separation-related behavior.

How much exercise does a Collie need?

Sixty minutes a day of moderate exercise is plenty for most adult Collies, with tolerance for more. The breed is herding-origin but has been bred primarily for companionship and show for several generations, which has softened the energy ceiling compared to Border Collies or Australian Shepherds. What matters more than raw minutes is structure: an hour of varied walking plus fifteen minutes of training or nose work is a calmer Collie than two hours of repetitive leash work. Puppy exercise stays low-impact until growth plates close at twelve to fourteen months.

What should I ask a Collie breeder?

Five questions. First: are both parents tested for MDR1 and CEA, and can I see the results? Second: are hips OFA-certified and can I see the certificate? Third: has either parent or any littermate from prior litters been diagnosed with dermatomyositis? Fourth: what's the cancer age-of-onset distribution in older offspring? Fifth: do you stay in touch with puppy owners and have a return or support policy if a hereditary condition appears? A breeder who answers the first four specifically and the fifth without defensiveness is usually someone to trust.

When Veta is ready

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About the author

Rachel Howland, CVT (ret.)

Rachel Howland, CVT (ret.), spent a decade in clinic: seven years in a mixed practice in upstate New York, then three on the internal-medicine floor at Angell Animal Medical Center in Boston. She left practice in 2017 and has written about small-animal health since. She lives in Somerville with Juno, an 11-year-old hound mix managing chronic kidney disease, and Bishop, a Siamese cat.

Rachel is Veta's lead editorial contributor. She does not diagnose or prescribe; she explains what your vet's records are telling you and what questions are fair to ask.

Sources

Merck Veterinary Manual. Routine health care of dogs (wellness exam cadence, vaccination, parasite prevention). merckvetmanual.com.
Washington State University Veterinary Clinical Pharmacology Laboratory. MDR1 testing and drug list. vcpl.vetmed.wsu.edu.
Orthopedic Foundation for Animals (OFA). Breed statistics for hips, elbows, eyes, and cardiac in the Collie. ofa.org.
American College of Veterinary Surgeons. Canine hip dysplasia — large-breed puppy growth velocity, nutrition, and controlled exercise. acvs.org.
AAHA 2022 Canine Vaccination Guidelines. Core vs non-core vaccines and puppy series cadence. aaha.org.