The short answer
On average, the Bernese Mountain Dog is one of the shorter-lived breeds, commonly around seven to eight years, mainly because of a high rate of cancer, particularly histiocytic sarcoma. That is a breed tendency, not a certainty for your dog, and plenty live longer. Like most giant breeds it is also prone to hip and elbow dysplasia and to bloat (it is deep-chested), and the breed carries degenerative myelopathy and von Willebrand disease in its lines. Responsible breeders screen for the heritable conditions; a rescue Berner should get a full vet assessment. Because illness can be serious and can arrive young, pet insurance taken out early, before any condition is on record, is the most valuable thing an owner can do, paired with weight control, routine parasite prevention and regular check-ups. In Perth, the heavy coat also makes heat-related illness a real risk. This is general information, not veterinary advice.
Cancer and lifespan: the defining reality
There is no honest Bernese guide that does not lead with this. The breed carries an unusually high burden of cancer, much of it aggressive, and as a result the Bernese is commonly cited as one of the shorter-lived dog breeds, often living only around seven to eight years on average. The cancer most associated with the breed is histiocytic sarcoma (malignant histiocytosis), which Berners develop more often than dogs in general, along with mast cell tumours and lymphoma.
Two things are worth holding together here. The first is that this is a genetic tendency of the breed, something an owner does not cause and cannot prevent, so there is no blame in it. The second is that it is a breed average, not a prediction for the dog in front of you; many Berners live well beyond those years. What you can do is give a Berner the best odds and the best quality of life: keep the dog lean, keep up regular veterinary checks so anything is caught early, and report promptly any unexplained lump, weight loss, persistent lethargy, lameness that does not resolve, or change in appetite. Early veterinary attention gives the most options. For a plain-language reference on canine cancer signs, the RSPCA Knowledgebase and your own vet are the best starting points, and the Australian Veterinary Association can help you find a vet experienced with the breed.
Hip and elbow dysplasia
Like most giant breeds, the Bernese is prone to both hip and elbow dysplasia, malformations of the joint that lead to arthritis, pain and lameness. Responsible breeders hip and elbow score their breeding dogs (screening described by the Orthopedic Foundation for Animals), which is why the paperwork matters when buying, and a rescue Bernese benefits from a vet assessment of its joints. Management ranges from weight control and appropriate exercise to joint support, pain relief and, in severe cases, surgery. The single biggest lever an owner controls is weight: keeping a Berner lean through the growth phase and again in old age takes real load off the joints.
Bloat (gastric dilatation-volvulus)
As a deep-chested giant, the Bernese is at real risk of bloat, where the stomach fills with gas and can twist, cutting off the blood supply. It is a life-threatening emergency requiring immediate surgery, and it kills quickly. Learn the signs now, before you ever need them: a swollen, hard belly, unproductive retching, restlessness and pacing, drooling and obvious distress. Reduce the risk by feeding measured meals rather than one large one, using a slow-feeder if the dog gulps, and avoiding hard exercise right after eating. Ask your vet whether a preventive gastropexy makes sense for a deep-chested breed. Know your nearest emergency hospital before the day you need it, and treat any suspected bloat as a get-to-a-vet-now situation, not a wait-and-see one.
Emergency: bloat and heatstroke are both life-threatening, act now
Two Bernese emergencies mean get to a vet immediately, day or night. Bloat: a swollen, hard belly with unproductive retching, pacing, drooling and distress, where minutes matter because a twisted stomach kills fast. Heatstroke: frantic panting, bright red gums, weakness, stumbling or collapse in the Perth heat, where you cool the dog with cool (not icy) water on the belly and paws on the way in. For either, phone ahead and go straight to a 24/7 hospital. Perth has round-the-clock emergency hospitals including WAVES at Success and Perth Vet Emergency at Cannington. Do not wait to see if it passes.
Degenerative myelopathy and von Willebrand disease
- Degenerative myelopathy. A progressive, non-painful disease of the spinal cord seen in the breed, causing gradual hind-limb weakness and loss of coordination in older dogs. There is a DNA test for the associated gene, though carrying it does not guarantee a dog will develop the disease, and while there is no cure, physiotherapy and supportive care help maintain quality of life.
- Von Willebrand disease. An inherited bleeding disorder present in some Bernese lines, where blood does not clot normally. It matters most around surgery or injury, so knowing a dog's status is useful, and reputable breeders test for it.
Because several conditions can cause hind-leg weakness in an older Bernese, from arthritis to disc disease to degenerative myelopathy, any progressive change in the back legs is a proper veterinary assessment rather than something to put down to age.
Heat is a health issue in Perth
A dog bred for the Swiss Alps, in a heavy black double coat, is genuinely heat-sensitive in a hot dry Perth summer, so heat-related illness is a real health risk for this breed here, not a comfort nicety. Perth summers run long and hot, often 35 to 40 degrees for days at a time. Exercise only in the cool of the early morning and evening, provide shade, constant fresh water and indoor cooling on hot days, and learn the signs of heat stress (heavy panting, drooling, weakness, vomiting, collapse), which is an emergency. Never shave the double coat to cool the dog, because that coat insulates against heat as well as cold and does not regrow the same; the coat and heat guide explains what to do instead, along with the WA snake and 1080 hazards.
On parasites, Perth is unlike the eastern-states coast: the Australian paralysis tick is not established here, so local paralysis-tick risk is low and you do not need the year-round tick regime followed in Queensland or coastal NSW. A Perth Berner still needs routine flea, worm and heartworm prevention, and the main time paralysis ticks become relevant is before you travel east with your dog. Your vet and the Australian Veterinary Association can point you to the right preventive products for your dog and your travel plans.
Why a rescue Bernese is a good start
None of this is a reason to hesitate over a rescue Bernese. The breed's conditions are real but most are manageable, many Berners are healthy for most of their lives, and a rescue dog actually puts you ahead: it arrives desexed, vaccinated, microchipped and vet-checked, so a professional has already looked it over, and the rescue can tell you what the assessment found. Ask specifically about the joints, the back legs, any lumps and the dog's general condition, book your own baseline vet visit in the first week, keep the dog lean and well-fed, and insure it while it is young. General guidance from the RSPCA Knowledgebase is useful background, but your vet guides care for your individual dog. If a giant breed suits your home, browse the large dogs available for adoption in Perth.
Thinking about a Bernese in Perth?
A rescue Berner comes with a vet check and honest foster notes, so you adopt knowing the dog. Browse Bernese Mountain Dogs and crosses available in Perth and WA rescue.
See Available Bernese Mountain Dogs →Frequently Asked Questions
Why do Bernese Mountain Dogs have such a short lifespan?
Because the breed carries an unusually high burden of cancer, and much of it is aggressive. The Bernese is commonly cited as one of the shorter-lived dog breeds, often living only around seven to eight years on average, and cancer is the leading cause. That is a breed average and a genetic tendency, not a sentence on any one dog and not something an owner causes or can prevent. Plenty of Berners live longer, and good weight management, veterinary attention and early insurance make the years easier and any illness more treatable. It is the single most important thing to understand before adopting one, and it is a reason to cherish the time rather than a reason not to adopt. This is general information, not veterinary advice.
What kind of cancer affects Bernese Mountain Dogs?
The breed is particularly associated with histiocytic sarcoma (also called malignant histiocytosis), an aggressive cancer that Berners develop more often than dogs in general, along with other cancers such as mast cell tumours and lymphoma. Signs are non-specific and depend on where the cancer is, which is exactly why regular veterinary checks matter: report any unexplained lump, weight loss, lethargy, lameness that does not resolve, or change in appetite to your vet promptly. Early veterinary attention gives the best options. This is general information, not veterinary advice, so your vet is the right guide for your dog.
Do Bernese Mountain Dogs get hip and elbow dysplasia?
Yes, like most giant breeds they are prone to both hip and elbow dysplasia, malformations of the joint that lead to arthritis, pain and lameness. Responsible breeders hip and elbow score their breeding dogs, which is why the screening paperwork matters when buying, and a rescue Bernese benefits from a vet assessment of its joints. Management ranges from keeping the dog lean and appropriately exercised, to joint support and pain relief, to surgery in severe cases. Keeping a giant breed at a healthy weight, especially as a growing pup and later as a senior, is the biggest thing an owner controls.
Are Bernese Mountain Dogs at risk of bloat?
Yes. As a large, deep-chested breed the Bernese is at real risk of gastric dilatation-volvulus (bloat), where the stomach fills with gas and can twist, cutting off blood supply. It is a life-threatening emergency that needs immediate surgery. Learn the signs (a swollen hard belly, unproductive retching, restlessness, drooling, obvious distress), feed measured meals rather than one big one, avoid heavy exercise right after eating, and know where your nearest emergency hospital is before you ever need it. In Perth, round-the-clock emergencies are handled by hospitals including WAVES at Success, The Animal Hospital at Murdoch University, and Perth Vet Emergency at Cannington. Bloat is a get-to-a-vet-now situation.
What other health problems should Berner owners watch for?
Two worth knowing. Degenerative myelopathy is a progressive, non-painful disease of the spinal cord seen in the breed, causing gradual hind-limb weakness in older dogs; there is a DNA test for the associated gene. Von Willebrand disease is an inherited bleeding disorder that can matter if the dog needs surgery, so it is worth knowing a dog's status. Berners can also suffer eye conditions and, because of the heavy coat, heat-related illness in the Perth climate, which is covered in the coat and heat guide. Regular veterinary checks catch most problems earlier than an owner would.
Do Bernese Mountain Dogs in Perth need year-round paralysis-tick prevention?
No. The Australian paralysis tick is an eastern-seaboard species and is not established in Perth or WA, so local paralysis-tick risk is low, and you do not need the year-round tick regime that owners on the Queensland and coastal NSW coast follow. What a Perth Berner does need is routine flea, worm and heartworm prevention, which your vet can set up. The one time paralysis ticks become relevant is if you plan to travel east with your dog, to the Queensland, NSW or Victorian coast, in which case ask your vet about tick prevention before you go. Do not assume the eastern-states tick framing applies in Perth.
Does the Perth climate affect a Bernese's health?
Yes, and it is a genuine health issue, not just a comfort one. A dog bred for the Swiss Alps, in a heavy black double coat, is heat-sensitive in a hot dry WA summer, so heat-related illness is a real risk here. Perth summers run long and hot, often 35 to 40 degrees for days at a time, and that is dangerous for a cold-climate giant. Manage it the way the coat and heat guide describes: exercise early and late only, provide shade, water and indoor cooling, never shave the coat, and learn the signs of heatstroke, which is an emergency. The other local hazards are snakes in the warmer months and 1080 baiting in reserves.
Is pet insurance worth it for a Bernese Mountain Dog?
For this breed, yes, more than almost any other, and the timing is everything: take out cover as soon as you adopt, before any condition is on record, because insurers exclude pre-existing conditions. The Bernese cancer risk, giant-breed orthopaedic problems and bloat emergency surgery can each run into many thousands of dollars, and illness can arrive young. Read the waiting periods and exclusions, consider a policy with a high annual limit, and pair insurance with the preventive basics, weight control, routine parasite prevention, dental care and regular check-ups, which are what keep a Berner healthier for longer.
A rescue Bernese has an unknown history. Is that a health risk?
Less than you might think, and in some ways it is an advantage. A rescue Bernese arrives desexed, vaccinated, microchipped and vet-checked, so a professional has already looked it over and the rescue can tell you what the assessment found. Ask specifically about the joints, the back legs, any lumps and the dog's general condition, then book your own baseline vet visit in the first week. You will not have breeder screening paperwork, but you gain a foster carer's or shelter's honest read on the individual dog, and you can insure from day one. Keep the dog lean, feed it well, and stay on top of check-ups, which matters more for lifelong health than knowing the pedigree.
Keep reading
Adoptable Bernese Mountain Dogs in Perth
Live listings with foster carer notes on temperament, size and health.
Bernese Adoption in Perth
Where to look, why they reach rescue, real costs, and whether one suits your home.
Bernese Coat & Heat Care in Perth
Why you never shave the double coat, the brush-out routine, and managing the WA summer.
Perth Adoption Resources
Guides on adopting, costs, council rules and settling a rescue dog in Perth.