The Long Haired Collie is intelligent, driven, and tireless. But herding breeds carry genetic risks - hip dysplasia, eye diseases, and epilepsy are common. An active dog needs an active health budget.
Measured risks
How often they happen is backed by published studies.
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All dogs All-dogs baseline skin disorder rate; no Rough Collie-specific breed effect confirmed.
Chronic skin inflammation causing persistent itching and repeated infections. Full profile →
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All dogs All-dogs baseline diagnosed dental disease rate; no Rough Collie-specific breed effect confirmed.
Periodontal disease affects over 80% of dogs by age 3. Bacteria from infected teeth enter the bloodstream, damaging heart, kidneys, and liver over time. Full profile →
Known risks
Well documented in the breed - but no study has counted how often.
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Breed study A Japanese molecular epidemiological survey of 151 Collies found the SOD1 c.118G>A mutation at 25.8% carrier frequency and 25.8% at-risk/homozygous (allele frequency 0.138) (Toyoda et al.). This is a genetic carrier/genotype frequency, not a clinical-disease-incidence rate - most carriers and even most at-risk dogs never manifest DM.
This breed shows a real, gene-confirmed degenerative myelopathy carrier rate, though most carriers never develop clinical disease. Full profile →
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Not measured No confirmed Rough Collie-specific hip dysplasia percentage found.
Malformed hip joint causing pain, limping, and progressive arthritis. Full profile →
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Breed study A 7,799-bp deletion in the NHEJ1 gene causes Collie Eye Anomaly, historically estimated at 70-97% prevalence in US/UK Rough and Smooth Collies before genetic testing (around 68% in Sweden, around 40% in Switzerland); a genotype-frequency study found the mutant allele at up to 83.3% and homozygous-affected genotype at 66.7-81.3% depending on population. This is a distinct disease from Progressive Retinal Atrophy and should not be conflated with it. Replaces a generic, understated PRA placeholder with the breed's genuinely defining eye disease.
This breed has a real, extremely well-documented eye disease affecting the large majority of the breed historically, distinct from ordinary PRA. Full profile →
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Not measured No confirmed Rough Collie-specific epilepsy prevalence found.
Recurrent seizures requiring lifelong medication and monitoring. Full profile →
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Not measured No confirmed Rough Collie-specific hypothyroidism prevalence found.
Underactive thyroid. Lifelong medication Full profile →
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Breed study Canine dermatomyositis involves at least three genetic risk loci (PAN2 missense variant, MAP3K7CL, and DLA-DRB1), documented specifically in Collies and Shetland Sheepdogs, with onset typically before 6 months of age, sometimes as early as 7 weeks (published in PLOS Genetics). No population prevalence percentage has been published. Replaces a generic, unsupported cancer placeholder with a real, breed-defining condition.
This breed carries a real, named, gene-associated autoimmune skin and muscle disease essentially defining for the breed, shared with the Shetland Sheepdog. Full profile →
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Breed study [1] An ABCB1 (MDR1) gene mutation causes severe sensitivity to ivermectin and other macrocyclic lactone medications; an Italian study found mutant allele frequency of 66% in Rough Collies (75% in Smooth Collies), among the highest of any breed studied, with other UK data citing around 48.3% (Marelli et al. 2020, Veterinary Record Open; Mealey & Meurs). Replaces an unsupported generic osteoarthritis placeholder with the breed's most clinically urgent documented risk.
This breed carries one of the highest documented rates of a real, well-characterized drug-sensitivity mutation of any breed, causing dangerous reactions to common medications. Full profile →
How we know these numbers
- Confirmed = measured or gene-confirmed specifically in this breed
- Breed study = scientists counted it in this exact breed
- Body type = comes from the dog's build - size, skull, skin
- Genetic risk = the gene is proven, the odds are not
- All dogs = an average for all dogs, not this breed
- Not measured = nobody has counted it yet
- How we grade evidence →
Most owners sign a policy based on ads, but learn the real rules only when their first big claim gets denied. We don't want to scare you. We want to prepare you.
Price Explosion Premium creep
Hostage Status Pre-existing
The Year 6 Rule Age limit
Symptom = Game Over Pre-existing
Bilateral Exclusion Bilateral
AI Claims Adjuster Coverage
Orthopedic Waiting Period Waiting period
UCR Limits Exclusion
Common Questions
Real answers about costs, treatment, and insurance coverage.
What is the most common health problem in Long Haired Collies?
How much does pet insurance cost for a Long Haired Collie?
Is pet insurance worth it for a Long Haired Collie?
What is the average yearly vet cost for a Long Haired Collie?
What pre-existing conditions affect Long Haired Collie insurance coverage?
Does pet insurance cover hip dysplasia in Long Haired Collies?
How much does progressive retinal atrophy treatment cost for a Long Haired Collie?
Why does my Long Haired Collie insurance premium keep going up every year?
Can I switch pet insurance if my Long Haired Collie has a diagnosed condition?
What does pet insurance not cover for Long Haired Collies?
Should I get pet insurance or self-insure my Long Haired Collie?
What questions should I ask before insuring my Long Haired Collie?
Similar dogs
My mother-in-law's boxer. Problem. $1,200 in tests, no answers. Another vet solved it with $8 pills. When you're scared, you'll pay anything - and some vets price accordingly. So I built what I couldn't find: real costs, real exclusions, plain language. Not selling policies.
Sources
Research and data used to compile this profile.
- 1 Marelli SP, et al. Frequency of the mutant MDR1 allele in dog breeds in Italy. Veterinary Record Open. 2020.