The Bernese Mountain Dog was a farm dog in the Swiss canton of Bern: driving cattle, pulling carts of milk to market, and guarding the property. It is a working breed built for cold mountain weather and steady effort.
They are wonderful family dogs — famously gentle, deeply attached, and content to be wherever their people are. They also have one of the shortest lifespans and highest cancer rates of any breed, and anyone considering one should know that before falling in love with a photograph.
Lifespan and cancer
Bernese Mountain Dogs typically live seven to eight years, with many owners losing them earlier. Large-scale surveys have found cancer responsible for roughly half of all Berner deaths, considerably above the rate for dogs generally.
The breed is particularly associated with histiocytic sarcoma, an aggressive cancer that is rare in most breeds and disproportionately common in this one. Osteosarcoma, lymphoma and mast cell tumours also feature.
There is no screening test that predicts it and no prevention that reliably works. What you can do:
- Buy from breeders who track longevity and cause of death across their lines, and will discuss it openly
- Keep the dog lean throughout life
- Learn to check for lumps monthly, and have anything new checked promptly
- Take lameness in a large-breed dog seriously rather than assuming a strain
This is a hard section to read and an honest one. Berner owners tend to go in knowing, and they tend to do it again anyway.
Growth
A Berner goes from under a kilo to 35–50 kg, and how fast that happens determines a great deal about the joints it will have at six.
- Large-breed puppy food with controlled calcium and energy, from the start
- Never supplement calcium
- Keep the puppy lean — visible waist, ribs easy to feel
- Restrict impact exercise until growth plates close, around eighteen months. No long runs, no repetitive ball chasing, no stairs where avoidable, no jumping in and out of cars.
- Free play on soft ground is good and should not be restricted
Hip and elbow dysplasia are both prevalent. Ask to see hip and elbow scores for both parents.
Nutramax Cosequin DS Joint Health Supplement
Joint support is commonly used in large breeds from middle age. Discuss timing and dose with your vet rather than starting on spec in a growing puppy.
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Heat
That thick tricolour double coat was designed for Alpine winters. Berners suffer badly in warm weather and are at real risk of heatstroke at temperatures other breeds handle comfortably.
- No walks above about 20°C
- Shade, fans, cool flooring and constant water in summer
- Walk early morning and late evening
- Cooling coats for warm days
- Never left in a car
Ruffwear Swamp Cooler Dog Vest
Evaporative cooling helps a heavy-coated dog considerably. Soak, wring out, and re-wet as soon as it stops feeling cool to the touch.
Coat and grooming
Long, thick, double-layered, and it sheds constantly with two heavy moults a year.
- Thorough brushing two or three times a week, daily during a coat blow
- Undercoat rake, then a slicker for the topcoat
- Pay attention to the feathering, behind the ears, the ruff and the trousers, where mats form
- Bathing occasionally; drying thoroughly is essential in a coat this dense
Flying Pig High Velocity Dog Grooming Dryer
Getting a coat this thick properly dry is otherwise a multi-hour job, and a damp undercoat causes hot spots. It also removes loose undercoat far faster than brushing.
SleekEZ Deshedding Grooming Tool
Useful on the body during a moult. Follow with a comb through the feathering, which is where the actual mats are.
Temperament
Berners are calm, affectionate, sensitive and strongly people-oriented. They are usually excellent with children and generally good with other animals.
Two things to plan for:
They are sensitive. Harsh handling damages them quickly and they do not bounce back the way a more robust breed might. Reward-based training, and plenty of patience.
They want to be with you. Berners left alone for long hours frequently develop separation-related problems. This is a breed that suits a household where someone is usually around.
Socialise thoroughly between eight and sixteen weeks — the breed can be naturally reserved, and reserve tips into wariness without early exposure.
Training
Train early, while the dog is liftable. A 45 kg dog that has not learned loose-lead walking is a genuine problem for anyone but a strong adult.
Priorities before six months: lead manners, recall, not jumping up, settling on a mat, accepting handling and grooming.
PetSafe Easy Walk Dog Harness
Front-clip steering while lead manners are being trained. Useful as a training aid on a dog that will eventually outweigh most of the household.
Other health issues
- Bloat (GDV). Deep-chested, so learn the signs and avoid heavy meals around exercise.
- Hip and elbow dysplasia
- Degenerative myelopathy, a progressive spinal cord disease; a DNA test exists
- Von Willebrand’s disease, a bleeding disorder; testable
- Progressive retinal atrophy; testable
- Renal dysplasia in some lines
Good breeders test for what can be tested and are candid about what cannot.
Practical realities
- Space. Not much exercise, considerable floor area.
- Hair. Everywhere, permanently. A good vacuum is not optional.
- Cost. Food, insurance, medication doses and surgery all scale with size, and this breed uses its insurance.
- The car. Estate car and a ramp.
- Exercise. An hour a day of steady walking for an adult, plus mental work. They enjoy carting and drafting, which is what they were built for.
Bedsure Orthopedic Dog Bed
Joint support matters for a dog of this weight, and hard floors cause pressure sores on elbows. Measure the dog lying fully stretched and buy larger than that.
Is one right for you?
Yes if you want a large, gentle, deeply affectionate companion, can accommodate the grooming and the heat management, have the budget, and can accept a shorter time together.
No if you are out for long hours, live somewhere hot, cannot handle a big dog physically, or would find seven years too short.
They are, by most accounts of people who have lived with them, entirely worth it.
