Maltese live 12 to 15 years on average, and a fair number reach 16 or 17 in households that pay attention to the small stuff. They sit near the top of the longest-lived breed list for a reason. The breed is among the oldest toy dogs in existence, depicted on Greek pottery from the 4th century BC, and a couple of thousand years of selection for indoor companionship has produced a dog with an unusually clean inherited disease profile. The lifespan you actually get, though, depends on a few specific things that the breed’s anatomy makes harder than it sounds.
Key facts
- Typical lifespan: 12 to 15 years (American Kennel Club), with 16 to 17 common in well-managed dogs
- Leading lifespan factor: periodontal disease, which seeds bacteria affecting heart, kidneys, and liver
- Primary genetic risks: patellar luxation and inherited liver shunts (portosystemic shunts)
- No early-onset mitral valve disease, unlike similar-sized toy breeds
How long Maltese actually live
The AKC Maltese profile lists 12 to 15 years, which lines up with what breed clubs and veterinarians consistently report. That is already long for a dog, but it understates the ceiling. The American Maltese Association describes 15 and 16 as common in well-managed dogs, and 17 turns up often enough in breed-club records that no one is surprised by it.
Part of the explanation is structural. Maltese have a single coat (hair rather than fur) and no undercoat. They were bred for indoor life for so long that the breed never accumulated the working-dog injuries common in other small breeds. They also dodged the inherited cardiac issues that plague several toy-group neighbors. There is no Maltese equivalent of the early-onset mitral valve disease that haunts Cavaliers, which is part of why Maltese consistently outlive several breeds of similar size.
The flip side is that the things that do shorten a Maltese’s life are easy to overlook. They are quiet, slow, and dental rather than dramatic, and most of them are within an owner’s control. Small dogs in general have an age advantage that comes from their size and metabolic rate, but a Maltese that loses teeth at six or carries an extra pound at eight gives that advantage back without anyone noticing.
The dental story is the lifespan story
If you read one thing about Maltese health, this is it. The Maltese jaw is small, and like every dog it carries 42 adult teeth. That crowding traps plaque and accelerates tartar buildup, and by middle age a Maltese without routine dental care is often missing teeth and carrying chronic gum infection. The breed’s lifespan curve bends downward at exactly the point this catches up with them.
The damage is not limited to the mouth. A PMC review of periodontal disease in small dogs describes how chronic gum inflammation seeds bacteria into the bloodstream, where they reach the heart, kidneys, and liver. Periodontal disease in toy breeds has been associated with measurable changes in cardiac valve health and kidney function over years. The Maltese that loses a third of its teeth by age eight is not just uncomfortable, it is carrying a low-grade systemic inflammation that compounds with every other stress of aging.
The practical version of this is unglamorous. Brush three or four times a week with a soft brush and enzymatic toothpaste from puppyhood, and budget for a professional dental cleaning under anesthesia every one to two years. Owners who do this routinely reach the upper end of the lifespan range. Owners who do not lose dogs to slow cardiac and kidney decline that looks like aging but is partly preventable. There is no other single habit that affects a Maltese’s outcome as much as this one.
Other Maltese health considerations
Patellar luxation, where the kneecap slips out of its groove, is common across toy breeds and shows up in Maltese at meaningful rates. The Orthopedic Foundation for Animals tracks patellar luxation by breed, and the Maltese population shows clinical disease in a sizable minority of dogs. Mild cases (grade 1 or 2) often need no intervention beyond keeping the dog lean and avoiding jumps from furniture. Severe cases benefit from surgical correction in the first few years of life, before the joint develops compensatory arthritis. A Maltese kept lean carries far less stress on those knees, which matters for the second half of life.
Tear staining is mostly cosmetic, but sometimes signals a real issue: blocked tear ducts, irritation from facial hair touching the cornea, or low-grade conjunctivitis. Daily cleaning with a damp cloth handles the look. Persistent redness or cloudy discharge warrants a vet visit.
Liver shunts (portosystemic shunts) are worth mentioning because Maltese have a higher inherited rate than the average breed. Signs usually appear in young dogs: poor growth, neurological episodes after meals, slow recovery from anesthesia. The condition is correctable in most cases when caught early, so ask about bile acid testing on the parents.
What actually extends a Maltese’s life
Lean body weight does more for a Maltese than any supplement on the shelf. Toy breeds gain weight in tiny absolute amounts that translate to large proportional loads. An extra 200 grams on a 3-kilogram dog is the equivalent of 5 kilograms on a person, and Maltese hide it well under all that coat. Feed by body condition, not by the cup measurement on the bag, and adjust as the dog slows down past age eight.
Exercise should be regular and gentle. Two short walks a day keeps the cardiovascular system working and the joints mobile without stressing knees or back. Stairs and furniture jumps are the main mechanical risk, since a slip from a couch onto a hardwood floor is enough to luxate a patella in a dog this size. A small ramp or step pays for itself.
Annual bloodwork past age seven matters more than people expect. Maltese hide systemic illness well behind their cheerful demeanor, and routine bloodwork catches the kidney and liver changes that creep in with age. The other habits that extend lifespan in any dog apply here too.
The Maltese that reach 16 or 17 are almost never genetic outliers. They are dogs with reasonable breeding, intact teeth, healthy weight, and owners who noticed the early warning signs. The breed’s natural ceiling is high, and the average dog lifespan data shows Maltese consistently above the all-breed median. Getting there is mostly a matter of not losing ground in the boring middle years.
See your Maltese’s real age with the calculator, which uses the small breed curve to give you a number that is actually true for your dog.
