Bichon Frises most commonly die from old age-related conditions, with heart disease, cancer, and Cushing’s disease ranking among the top threats. With an average lifespan of 14 to 15 years, Bichons are a long-lived breed, but their later years bring a predictable set of health risks that owners should understand.
Heart Disease
Degenerative mitral valve disease is one of the most significant killers of Bichon Frises and other small breeds. The condition develops when the valve between two chambers of the heart gradually weakens and stops closing properly, allowing blood to leak backward with each heartbeat. Over months or years, this forces the heart to work harder and can eventually lead to congestive heart failure.
Not every dog with this condition dies from it. In a study published in the Journal of Veterinary Internal Medicine that tracked dogs with degenerative valve disease, only 46% of deaths were caused by the heart condition itself. The rest of the dogs died from unrelated causes, meaning many lived with the disease for years without it becoming fatal. Dogs in the study were diagnosed at an average age of about 10 years, and the rate of progression varied widely. Some dogs deteriorated quickly while others remained stable for a long time.
Early signs include a heart murmur your vet can detect during routine exams, coughing (especially at night or after exercise), and reduced stamina. As the disease progresses, fluid can accumulate in the lungs, causing labored breathing. Medication can slow progression and manage symptoms, often adding months or years of comfortable life.
Cancer
Cancer is a leading cause of death in dogs across all breeds, and Bichon Frises are no exception. The risk climbs steeply as dogs enter their senior years, particularly after age 10. Common types seen in Bichons include bladder cancer, mammary tumors, and lymphoma. Because Bichons live longer than many breeds, they simply have more years in which cancer can develop.
Warning signs depend on the type but often include unexplained weight loss, lumps or bumps that grow or change, persistent appetite loss, difficulty urinating, or lethargy that doesn’t improve. Some cancers respond well to treatment when caught early, while others are more aggressive. Regular veterinary checkups become especially important in the second half of a Bichon’s life, when tumors are more likely to appear.
Cushing’s Disease
Bichon Frises are one of the breeds most predisposed to Cushing’s disease, a condition where the body produces too much of the stress hormone cortisol. This usually happens because of a small, benign tumor on the pituitary gland in the brain. The excess cortisol slowly damages organs throughout the body, weakening the immune system, straining the liver, and raising the risk of blood clots, diabetes, and infections.
A large study of 219 dogs with Cushing’s disease found that the Bichon Frise was among the most commonly affected breeds. The median survival time after diagnosis was roughly 17 months, though outcomes varied considerably. Dogs diagnosed after age 13 had a much higher risk of dying sooner, with nearly four times the hazard compared to dogs diagnosed younger. About 76% of the dogs that died during the study were euthanized, reflecting the difficult quality-of-life decisions the disease often forces.
Cushing’s disease develops slowly, and early symptoms are easy to dismiss as normal aging: increased thirst, frequent urination, a pot-bellied appearance, thinning skin, and hair loss. If your Bichon starts drinking noticeably more water or having accidents in the house, that warrants a vet visit. Treatment with daily medication can control cortisol levels and significantly improve quality of life, though it requires ongoing blood work to monitor.
Kidney and Liver Failure
Organ failure in the kidneys or liver is another common way older Bichons decline. Chronic kidney disease develops gradually as the kidneys lose their ability to filter waste from the blood. By the time symptoms appear, a significant portion of kidney function is already gone. Signs include increased thirst, weight loss, vomiting, and a general decline in energy.
Liver disease can develop on its own or as a complication of other conditions like Cushing’s disease. Both kidney and liver failure are manageable in their earlier stages with dietary changes and medication, but they are progressive. Regular blood panels in senior Bichons, typically recommended starting around age 7 or 8, can catch organ decline before symptoms develop. The Bichon Frise Club of America recommends geriatric blood chemistry and urinalysis panels specifically to establish baseline values and detect these problems early.
Bladder Stones
Bichon Frises are genetically prone to developing bladder stones, particularly calcium oxalate stones. While bladder stones themselves are rarely fatal, they can cause serious complications if left untreated. A stone that lodges in the urethra can completely block urine flow, which becomes a life-threatening emergency within hours if not resolved.
The bigger concern is chronic, recurring stones damaging the urinary tract over time or requiring repeated surgeries. Early detection through routine urinalysis allows for dietary changes that slow stone formation and catches stones while they’re still small enough to remove without major surgery. Signs to watch for include straining to urinate, blood in the urine, frequent small urinations, or accidents in the house.
Neurological Conditions
Epilepsy and other seizure disorders affect some Bichon Frises, and while most dogs with epilepsy live normal lifespans with medication, severe cases carry real risk. A study in Frontiers in Veterinary Science found that among dogs with epilepsy, 10% of those that died experienced probable sudden unexpected death, a phenomenon similar to SUDEP in humans. Dogs that experienced clusters of seizures back to back were at significantly higher risk.
Status epilepticus, a prolonged seizure that doesn’t stop on its own, is the more immediate danger. It can cause brain damage, organ failure, or death if not treated as an emergency. Dogs with well-controlled epilepsy on appropriate medication face far lower risks than those with frequent or poorly controlled episodes.
What Helps Bichons Live Longer
The conditions that kill Bichon Frises are largely the same diseases that affect all small breeds in old age. What makes a difference is catching them early. A dog with a heart murmur detected at age 9 can start medication years before heart failure develops. A Bichon diagnosed with Cushing’s disease at 10 has a better prognosis than one diagnosed at 13.
Twice-yearly vet visits after age 7, including blood chemistry and urinalysis, give you the best shot at early detection. Maintaining a healthy weight matters enormously for heart health and joint function. Dental disease, while not a direct killer, creates chronic inflammation and bacterial loads that stress the heart and kidneys over time, so routine dental care is more important than many owners realize. Bichons that stay lean, get regular checkups, and receive prompt treatment for emerging conditions have every reason to reach that 14- to 15-year average and beyond.