20 Longest Living Dog Breeds (Plus the Shortest-Lived Giants)
Which dog breeds live the longest? A sourced list of 20 longest living dog breeds with realistic lifespan ranges by size class, why small dogs outlive giants, how long Saint Bernards live, and the evidence-backed ways to add years.
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If you want a dog who will be around for a long time, start with size. The longest living dog breeds are almost all small: the Chihuahua, Toy Poodle, Coton de Tulear, Papillon and their tiny cousins routinely reach 14 to 18 years, while the giants at the other end of the scale, the Saint Bernard, Great Dane and Irish Wolfhound, average closer to 7 to 10.
This guide ranks 20 longest living dog breeds with realistic lifespan ranges, then cross-checks every registry number against the biggest population study ever run on dog longevity, so you see what dogs actually live rather than what a breed club hopes for. It also answers the Saint Bernard lifespan question that brings so many readers here, shows which large breeds beat the size trend, and walks through the handful of habits with real evidence for adding years.
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Which Dog Breed Lives the Longest?
Small dog breeds live the longest, and the direct answer is a realistic range, not a single number. The Chihuahua leads the American Kennel Club (AKC) breed standards with a 14 to 16 year life expectancy, the Coton de Tulear is listed at 15 to 19 years, and the Toy Poodle, Shih Tzu and Chinese Crested all carry ranges that reach 18. Put together, the top tier of long-lived breeds sits in a typical range of 14 to 18 years, with individual dogs occasionally pushing past 20.
- 1Small breeds live longest: the Chihuahua, Toy Poodle, Coton de Tulear and Papillon top the longest living dog breeds list, with a typical range of 14 to 18 years when they are well cared for.
- 2Size drives lifespan. A 2024 population study of 584,734 UK dogs measured a median of 12.7 years for small breeds versus 11.9 for large breeds, and giants such as the Saint Bernard (8 to 10 years) and Great Dane (7 to 10 years) sit at the bottom.
- 3Registry ranges are averages, not a prognosis. Lean body condition, dental care, preventive vet visits and breed-specific screening are the levers that push an individual dog toward the top of its range.
The reason small dogs win comes down to how fast they age. A 2013 analysis of mortality data from 74 breeds, the Kraus 2013 size-lifespan study published in The American Naturalist, concluded that large dogs die young mainly because they age quickly: the bigger the breed, the faster its rate of aging, even though the onset of old age itself does not arrive earlier. Accelerated growth in the first year builds a giant body that then wears out sooner.
There is a caveat worth carrying through the whole list. Breed ranges describe populations. Your dog's own years depend on genetics from its specific parents, its weight through middle age, its dental health and how early problems get caught. Treat every number below as the bar to aim for, not a countdown.
How Long Do Dogs Live on Average?
The average dog lifespan across all breeds and mixes is about 12.5 years. That figure comes from the Scientific Reports 2024 breed longevity study by McMillan and colleagues, a population study of 584,734 UK dogs that measured median longevity rather than quoting registry ranges. Purebreds in that data had a median of 12.7 years and crossbreds 12.0, females lived slightly longer than males (12.7 versus 12.4), and long-nosed small breeds did best of all at 13.3 years.
Size class was the biggest single divider. Small breeds reached a median of 12.7 years, medium breeds 12.5 and large breeds 11.9, and the giants dragged the bottom of the chart: the study measured the Mastiff at 9.0 years and the St Bernard at 9.3. About 95 percent of dogs in every size class had died by age 18, which is why an 18-year-old dog of any breed is news in its neighborhood.
| Size class | Typical years (registry ranges) | Measured median (2024 UK study) | Example breeds |
|---|---|---|---|
| Small (under 20 lb) | 12 to 18 years | 12.7 years | Chihuahua, Toy Poodle, Papillon, Coton de Tulear |
| Medium (20 to 50 lb) | 10 to 15 years | 12.5 years | Beagle, Shiba Inu, Whippet, Australian Cattle Dog |
| Large (50 to 90 lb) | 10 to 13 years | 11.9 years | Standard Poodle, Australian Shepherd, Doberman, Alaskan Malamute |
| Giant (over 90 lb) | 7 to 10 years | 9.0 to 9.3 years (Mastiff, Saint Bernard) | Saint Bernard, Great Dane, Bernese Mountain Dog, Irish Wolfhound |
A second UK data set, the VetCompass life tables built from 30,563 deaths (Teng and colleagues, 2022), put life expectancy at birth at 11.23 years, with the Jack Russell Terrier on top at 12.72 and the French Bulldog at the bottom at 4.53. The lower overall number reflects how that study counted puppies and young dogs, and it is a reminder that where a dog lives and how it is bred matters: the same paper notes the Shih Tzu averages 11.05 years in the UK but 15.0 in Japan, and the Beagle 9.85 versus 14.8.
What you feed, and how much, moves these averages more than any supplement. In the landmark Labrador Retriever feeding study from 2002, dogs fed 25 percent less than their paired littermates from 8 weeks of age lived a median of 13.0 years against 11.2, and their chronic diseases started later. If you want to convert any of these ages into human terms, Petful's guide to how to calculate dog years explains why the old seven-to-one rule undercounts the first two years and overcounts the rest.
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Dog Breeds That Can Live 20 Years
Several breeds have documented individuals that reach 20 years, but 20 is the top of the range, not the average, even for the smallest dogs. The breeds most often recorded living to 20 are:
- Chihuahua: AKC range 14 to 16 years; the VetCompass tables show Chihuahuas are the breed most likely to still have years left at 15 to 16.
- Toy Poodle: AKC range 10 to 18 years, with many well-bred lines living into their late teens.
- Coton de Tulear: AKC range 15 to 19 years, the highest ceiling of any AKC-recognized breed.
- Chinese Crested: AKC range 13 to 18 years.
- Shih Tzu: AKC range 10 to 18 years.
- Australian Cattle Dog: AKC range 12 to 16 years, and the breed of Bluey, the oldest dog ever verified.
What the 20-year dogs have in common is not a secret ingredient. They are almost always small, kept lean through middle age, have clean teeth, and had owners who treated the senior years as a maintenance job rather than a wind-down.
Longest-Living Dog Breeds: The Full List
Here are the 20 longest living dog breeds, grouped by size class from toy to large, with at least one lifespan range for each: the AKC breed-standard range first, then the measured median from the 2024 population study or the 2022 life tables where the breed had enough dogs to count. Each entry pairs an original photo of the breed with its name and its lifespan range in the caption text, so you can match a dog you know to its expected years at a glance. Small breeds come first because they dominate the top of every longevity ranking, then medium and large breeds that hold their own. If you are asking which dog has the longest lifespan in the world, or what the longest-lived dog breed is, the answer is in the first few entries: by AKC ranges the Chihuahua and Coton de Tulear are the longest-lived dog breeds, and no giant makes the cut. (One trivia note, since it comes up: the dog with the longest tail on record, an Irish Wolfhound named Keon, belongs to one of the shortest-lived breeds on the planet.)
1. Chihuahua
The Chihuahua is the standard-bearer for canine longevity. The AKC lists 14 to 16 years, and Chihuahuas are the breed the UK life tables flag as still having meaningful life expectancy at 15 to 16 years of age, later than any other breed studied. The same tables also show the breed's weakness: a high rate of early-life deaths, which drags its at-birth average down. The lesson is that a Chihuahua that makes it through puppyhood healthy is set up for a very long run. Dental disease and mitral valve disease are the two conditions to watch from age 8; Petful's Chihuahua lifespan and health guide covers both.
2. Yorkshire Terrier
Yorkies pair a long AKC range of 11 to 15 years with the second-highest life expectancy in the VetCompass tables at 12.54 years. Weight is the lever that matters most in this breed: in a 50,787-dog study, overweight Yorkshire Terriers had a median lifespan of 13.7 years against 16.2 for lean ones, the largest gap of any breed measured. Collapsing trachea, dental crowding and luxating patellas are the routine issues; keep the harness on instead of a collar and the teeth clean, and a Yorkie's 15th birthday is a reasonable expectation.
3. Toy Poodle
The Toy Poodle's 10 to 18 year AKC range is one of the widest in the registry, and the top of it is where well-bred Toys tend to land. Poodles of every size are unusually healthy for a purebred, with progressive retinal atrophy, patellar luxation and Addison's disease the main screens to ask a breeder about. Their curly, low-shedding coat needs professional grooming every 6 to 8 weeks, which doubles as a monthly check for lumps and skin changes.
4. Pomeranian
Pomeranians carry a 12 to 16 year AKC range and a reputation for staying puppyish into their teens. Tracheal collapse, dental disease and a coat-loss condition called alopecia X are the breed-specific concerns, none of them typically life-shortening when managed. Petful's Pomeranian lifespan and health guide goes deeper on what to expect year by year.
5. Maltese
The Maltese sits at 12 to 15 years on the AKC standard, and 16 and 17-year-old Maltese are common enough that most breed rescues have one. The heart is the organ to watch: degenerative mitral valve disease is the most common cause of death in older Maltese, and a yearly stethoscope check from age 7 catches the murmur years before it causes trouble. Tear staining and dental crowding are cosmetic and manageable.
6. Dachshund
Dachshunds live 12 to 16 years by the AKC standard, and the miniature variety often outlasts the standard. The breed's long back is its lifespan risk: intervertebral disc disease is more common in Dachshunds than in any other breed, and excess weight multiplies the odds. Keep the dog lean, use ramps instead of stairs and jumps, and talk to your vet about a joint supplement once the dog is a senior. Petful's Dachshund lifespan guide explains what affects it.
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7. Shih Tzu
The AKC gives the Shih Tzu 10 to 18 years, and the Japanese data cited in the 2022 life tables measured a 15.0-year average, against 11.05 in the UK. That gap shows how much breeding and care matter in a flat-faced breed: heat, airway and eye problems are what shorten Shih Tzu lives, and a lean, air-conditioned, well-groomed Shih Tzu regularly reaches the high teens. See Petful's Shih Tzu lifespan guide for senior care specifics.
8. Jack Russell Terrier
The Jack Russell topped the entire VetCompass life table at 12.72 years of life expectancy at birth, the highest of the 18 breeds analyzed, and the AKC-recognized Russell Terrier is listed at 12 to 14 years. Jack Russells are a working terrier with few inherited diseases; the risks are trauma from fearless behavior and, in old age, the same heart and dental problems as other small dogs. Many live to 16 or beyond.
9. Bichon Frise
The Bichon's AKC range of 14 to 15 years is narrow and high. Bladder stones, allergies and dental disease are the breed's recurring issues, and none shorten life when treated. The white, low-shedding coat needs grooming every 4 to 6 weeks, which is also when most owners first notice the lumps that are usually benign in this breed.
10. Papillon
Papillons combine a 14 to 16 year AKC range with one of the best measured medians in the 2024 population study: 14.5 years, placing them among the four breeds least at risk of early death. Patellar luxation and dental disease are the main concerns. They stay active and trainable well into their teens, which helps keep weight off.
11. Miniature Schnauzer
Miniature Schnauzers live 12 to 15 years by the AKC standard. The breed's known weak spots are metabolic: pancreatitis, high blood fats and diabetes, all of which respond to a lean body and a low-fat diet. Petful's Miniature Schnauzer lifespan and health guide lists the screening schedule.
12. Lhasa Apso
The Lhasa Apso's 12 to 15 year range understates how many of these Tibetan monastery dogs live to 17 and 18. The breed is hardy; kidney disease, dry eye and allergies are the issues that show up in old age. Their long coat is a grooming commitment, not a health one.
13. Coton de Tulear
The Coton de Tulear holds the highest AKC life expectancy of any breed at 15 to 19 years. This Madagascar companion breed has a small gene pool but relatively few inherited diseases; patellar luxation and hip dysplasia are the screens to ask about. A Coton that reaches 19 is old, but not a record.
14. Chinese Crested
Chinese Cresteds live 13 to 18 years according to the AKC. The hairless variety has famously poor teeth, with early tooth loss and missing premolars written into the breed, so dental care is a daily job from puppyhood. Vet-approved dental chews help between brushings, and professional cleanings keep bacteria from reaching the heart and kidneys. Sunburn and skin problems are the other hairless-specific concerns.
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15. Beagle
Beagles are the first medium breed on the list, with an AKC range of 10 to 15 years and, again, a striking geographic gap: 9.85 years in the UK life tables versus 14.8 in Japan. Obesity is the Beagle's lifespan problem, because they are food-driven and easy to overfeed. A lean Beagle with its epilepsy and hypothyroidism screened for regularly reaches 15.
16. Shiba Inu
The Shiba Inu's 13 to 16 year AKC range is backed by a 14.6-year measured median in the 2024 study, the third-best of 155 breeds. Allergies, patellar luxation and glaucoma are the breed's issues. Petful's Shiba Inu lifespan and health guide covers what owners should know as the dog ages.
17. Australian Cattle Dog
Australian Cattle Dogs, also called blue heelers, live 12 to 16 years by the AKC standard and produced Bluey, the Guinness-verified oldest dog ever at 29 years and 5 months. Progressive retinal atrophy and deafness are the inherited screens; otherwise this is a tough, lean working dog whose main risk is boredom. Petful's Australian Cattle Dog breed profile explains the exercise this breed needs.
18. Whippet
Whippets are the healthiest of the sighthounds, with an AKC range of 12 to 15 years and few inherited diseases beyond heart murmurs and anesthesia sensitivity. Their lean build is a built-in longevity advantage; a Whippet carrying extra weight is the exception, not the rule.
19. Standard Poodle
The Standard Poodle is the giant-breed exception in reverse: a 40 to 70 pound dog with a 10 to 18 year AKC range that many large-breed owners would envy. Bloat, Addison's disease, sebaceous adenitis and hip dysplasia are the screens. Its expected years beat almost every other breed over 50 pounds.
20. Australian Shepherd
Australian Shepherds close the list at 12 to 15 years, a strong number for a 40 to 65 pound herding dog. The MDR1 gene mutation, which causes drug sensitivity, is the one test every Aussie should have, alongside hip and eye screens. Kept working and lean, Aussies regularly reach 15.
Longest-Living Small and Medium Dog Breeds Compared
Small dog breed lifespan runs longer than any other size class, and the 2024 study measured it directly: a 12.7-year median across small breeds, rising to 13.3 years for small breeds with a normal or long muzzle. The longest living small dog breeds on our list, the Chihuahua, Coton de Tulear, Papillon, Toy Poodle and Chinese Crested, all carry AKC ranges that top out at 16 to 19 years. Flat-faced small breeds are the exception; brachycephalic medium breeds in that study died 2.69 times faster than the small long-nosed group.
The longest-living medium dog breeds narrow the gap more than most people expect. Medium breeds measured a 12.5-year median, only two months behind small dogs, and the Beagle, Shiba Inu, Whippet and Australian Cattle Dog all carry ranges that reach 15 or 16. What medium sized dogs live the longest tends to come down to build: lean, athletic breeds like the Whippet and Cattle Dog outlast heavy-bodied ones of the same weight.
Dental disease is the one problem that unites the small and medium long-livers. Crowded teeth in a small mouth mean periodontal disease by age 3 in most toy breeds, and a large primary-care analysis of 2.37 million dogs found that dogs receiving more frequent dental scaling had a lower hazard of death after age 2. Brushing, vet-approved chews and professional cleanings are lifespan care in these breeds, not cosmetics. Petful's dog dental care guide covers costs and what a cleaning involves.
Which Large and Giant Dog Breeds Live the Longest?
The size trend is real but not absolute, and this is where a reader choosing a big dog should slow down. No mainstream ranking separates the large and giant breeds that beat the size trend from the giants that do not, so here is that split with expected years for each.
Large breeds that beat the size trend:
- Standard Poodle (40 to 70 lb): AKC 10 to 18 years. The longest living large dog breed on any list, with many reaching 14 to 16.
- Australian Shepherd (40 to 65 lb): AKC 12 to 15 years.
- Alaskan Malamute (75 to 85 lb): AKC 10 to 14 years, unusually long for a dog this heavy. Petful's Alaskan Malamute profile has the details.
- Doberman Pinscher (60 to 100 lb): AKC 10 to 12 years, with dilated cardiomyopathy the risk that decides which end of the range a Dobe lands on; see Petful's Doberman lifespan and screening guide.
Giants that do not:
- Saint Bernard (120 to 180 lb): AKC 8 to 10 years; measured median 9.3.
- Great Dane (110 to 175 lb): AKC 7 to 10 years. Petful's Great Dane lifespan guide explains the heartbreak-breed label.
- Bernese Mountain Dog (70 to 115 lb): AKC 7 to 10 years, with cancer the leading cause of death.
- Mastiff (120 to 230 lb): AKC 6 to 10 years; measured median 9.0.
The reason for the gap is the aging-rate finding from the Kraus study: the giants are built by explosive first-year growth and pay for it with faster cellular aging, higher cancer rates and joint failure. The giant-breed exceptions that live longer than expected, the Malamute and the Standard Poodle, are lighter-framed for their height and were not bred for extreme mass. If you want a big dog and the most years, a 60 to 80 pound athletic breed is the sweet spot; the longest living giant dog breeds still rarely pass 12.
The other cost of a giant is the vet bill. Bloat surgery, cruciate repairs and cancer treatment all scale with body weight, and a 9-year lifespan leaves little time to spread those costs out, which is why owners of large and giant breeds tend to insure the dog while it is young and healthy rather than waiting for the first claim.
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How Long Do Saint Bernards Live?
Saint Bernards live 8 to 10 years on average. That is the AKC life expectancy for the Saint Bernard, and the 2024 UK population study measured almost exactly the same thing: a median of 9.3 years and a 1.7 times higher hazard of early death than the average dog. Most longest-living lists skip this question even though it is the one Saint Bernard owners ask most, so we answer the Saint Bernard lifespan question on the same page as the list. Today the honest summary is this: a St. Bernard that reaches 10 has done well, 11 and 12 happen with good genetics and careful weight management, and anything beyond that is exceptional.
Sex makes a small difference. There is no Saint Bernard-specific study on it, but across the 2024 population data females outlived males by about four months (12.7 versus 12.4 years), and spayed females avoid the mammary tumors that are common in intact bitches. Male Saint Bernards are heavier, and every extra pound of frame in this breed adds joint and heart strain. Where Saint Bernards come from explains the build: the breed was developed at the Great St. Bernard Hospice in the Swiss Alps as a rescue and draft dog, and the modern show dog is considerably heavier than the working dogs of the 1800s.
- Three checks separate a Saint Bernard that reaches 10 from one that does not: a yearly heart exam (dilated cardiomyopathy is common in the breed), hip and elbow radiographs before heavy exercise, and a bloat risk plan. Bloat (gastric dilatation-volvulus) can kill a deep-chested giant in hours, so feed two or three smaller meals, skip exercise for an hour after eating, ask your vet about a preventive gastropexy at spay or neuter time, and know the signs: a swollen belly, unproductive retching and restlessness mean an emergency vet visit now.
What shortens a Saint Bernard's life in the giant-breed context is a short list: bloat, dilated cardiomyopathy, osteosarcoma (bone cancer), and hip and elbow dysplasia that leaves a 150-pound dog unable to rise. Bloat is the acute emergency; Petful's dog bloat timeline shows how quickly it moves. Emergency bloat surgery for a giant breed commonly runs into the thousands of dollars, which is why many Saint Bernard owners insure early, while the dog is young and before hips, heart or skin problems become pre-existing conditions.
To help a Saint Bernard reach the top of its range: feed a large-breed puppy food so the skeleton grows slowly, keep the adult lean enough that ribs are easy to feel, do the heart and orthopedic screening above, and treat every senior year from age 5 onward as a maintenance year with twice-yearly exams. For temperament, grooming and everything that is not lifespan, Petful's Saint Bernard breed profile covers the rest of the breed.
How Long Do Bernese Mountain Dogs Live?
Bernese Mountain Dogs live 7 to 10 years, one of the shortest ranges of any breed, and the longest living Bernese Mountain Dogs rarely pass 12. Cancer, especially histiocytic sarcoma, is the leading cause of death, and it is the reason the breed's average falls below other dogs of the same weight. Because a Berner's outlook depends so much on its specific lines and on how early cancer is caught, Petful's dedicated Bernese Mountain Dog lifespan guide covers the studies, screening and senior-care plan in full, and the Bernese Mountain Dog breed profile covers everything else about living with one.
Shortest-Living Dog Breeds and Why Size Matters
The shortest living dog breeds are the giants and the extreme flat-faced breeds, and the two groups fail for different reasons.
By AKC life expectancy, the breeds with the shortest ranges are:
- Dogue de Bordeaux (French Mastiff): 5 to 8 years. Petful's Dogue de Bordeaux profile has the breed details.
- Irish Wolfhound: 6 to 8 years, the tallest of all breeds; see the Irish Wolfhound breed profile.
- Mastiff: 6 to 10 years.
- Great Dane: 7 to 10 years.
- Bernese Mountain Dog: 7 to 10 years.
- Saint Bernard: 8 to 10 years.
- Newfoundland: 9 to 10 years; Petful's Newfoundland health and lifespan guide covers the breed's heart and joint risks.
The 2024 population study measured the same pattern with a few surprises: the Caucasian Shepherd Dog had the lowest median of all 155 breeds at 5.4 years, followed by the Presa Canario (7.7), Cane Corso (8.1) and Mastiff (9.0), and the flat-faced Bulldog and French Bulldog both came in at 9.8 years despite being small or medium dogs. The VetCompass life tables were harsher still on the French Bulldog, at 4.53 years of life expectancy at birth, because of high early-life mortality from airway and spinal disease. Petful's French Bulldog lifespan and health guide explains what that number does and does not mean for an individual Frenchie.
Why do little dogs live longer than big dogs, and why do small dogs outlive large dogs by four or five years on average? Two mechanisms explain most of it, and the aging evidence points the same way. First, accelerated growth and aging rate: the Kraus analysis found that body mass predicts how fast a breed ages, so a Great Dane's cells run through their lifespan faster than a Chihuahua's. Second, cause of death: in the 74,556-dog Veterinary Medical Database mortality study, larger breeds died more often of musculoskeletal and gastrointestinal causes (bloat, bone cancer) while smaller breeds died of endocrine disease later in life. Small dogs get more time to age slowly; giants run out of runway. Flat-faced breeds are the other shortest-living group for an unrelated reason: airway, spine and eye problems built into the head shape, which is why the shortest and longest living dog breeds can both be small. One giant that searchers often expect on this list, the corded Komondor, is not: the AKC lists it at 10 to 12 years, respectable for a 100-pound flock guardian.
Healthiest Long-Lived Breeds: Low-Shedding, Mixed-Breed, and Guard Dogs
The healthiest longest living dog breeds are the ones that pair a long range with few inherited diseases: the Toy Poodle, Papillon, Whippet, Jack Russell Terrier, Australian Cattle Dog and Shiba Inu all fit, and the Standard Poodle is the healthiest large option. For allergy households, the low-shedding long-livers are the Poodles of every size, Bichon Frise, Maltese, Coton de Tulear, Shih Tzu, Lhasa Apso, Yorkshire Terrier and Miniature Schnauzer.
Mixed breed dog lifespan is a more complicated story than the "mutts are healthier" rule suggests. The 2.37-million-dog primary-care analysis found mixed-breed dogs lived significantly longer than purebreds, with the advantage growing as body size increased. The 2024 UK study found the opposite at the population level, a 12.0-year crossbred median versus 12.7 for purebreds, but noted that 47 percent of purebreds outlived crossbreds and most of the crossbred shortfall came from a few popular mixes with short-lived parents. The average lifespan of a mixed breed dog, in other words, depends almost entirely on what is in the mix: a Poodle cross like the Cockapoo inherits a long range, while a Great Dane cross inherits a short one. A DNA test that identifies both the breed mix and 200-plus health markers is the practical way to know which ranges apply to a rescue dog.
The longest living guard dog breeds are the medium-sized working breeds rather than the mastiff types. The Australian Cattle Dog and Australian Shepherd on this list are alert, protective and reach 15; the Belgian Malinois averages 14 to 16 years by the AKC standard and is the longest-lived of the serious protection breeds; the Doberman reaches 10 to 12 with a healthy heart. Bully-type guardians sit lower: the American Bully is usually quoted at 8 to 13 years with no large study behind it, and the giant mastiffs run 6 to 10. If protection and longevity both matter, choose the athletic 50 to 70 pound herding and working breeds over the 120-pound guardians. And for the record, since the question comes up on every breed list: the so-called dumbest dog breeds ranking has nothing to do with lifespan, and several of the breeds on it live very long lives.
The Oldest Dogs on Record
The oldest dog ever verified by Guinness World Records is Bluey, an Australian Cattle Dog from Rochester, Victoria, who lived 29 years and 5 months, from June 1910 to November 1939, working cattle for nearly 20 of them. Bluey held the longest living dog record for more than 80 years, lost it briefly in 2023 to Bobi, a Portuguese Rafeiro do Alentejo whose owner claimed more than 31 years, and got it back in February 2024 when Guinness revoked Bobi's title after finding the microchip evidence for his birth date inconclusive.
Has a dog ever lived 40 years? No. No dog has ever lived 40 years by any verified record; the longest living dog record stands at just under 30, and the handful of claims above 30 have never survived scrutiny. The caveat that matters for owners is that records are outliers. Bluey lived roughly twice the AKC range for his own breed. A record is proof of what a dog's biology can do under unusual circumstances, not a prognosis for the dog on your couch, and the same is true of the 20-year Chihuahuas and Toy Poodles you meet online.
How to Help Your Dog Live Longer
You cannot change your dog's breed or size, but four evidence-backed ways to extend a dog lifespan are in your hands: weight, dental care, preventive vet care and breed screening. Here is what the evidence supports, in order of how much it moves the needle.
- Lean body condition. Overweight dogs died younger in every one of 12 breeds in a 50,787-dog study, losing up to 2.5 years in Yorkshire Terriers, and the restricted-fed Labradors in the 2002 study gained 1.8 years. Learn to score body condition (ribs easy to feel, a waist from above) and feed to it, not to the bag. Petful's obese dogs guide covers how to get weight off safely.
- Dental care. Dental disease is one of the most common diseases in adult dogs, and more frequent dental scaling was associated with a lower hazard of death in the 2.37-million-dog analysis. Brush daily if you can, use vet-approved chews if you cannot, and schedule cleanings on your vet's recommendation.
- Preventive care. Twice-yearly exams with bloodwork from age 7 in small dogs and age 5 in giants catch kidney, liver, heart and endocrine disease early. Keep vaccines, heartworm and parasite prevention current; the 2013 sterilization study found infection and trauma, not old age, were what killed intact dogs early.
- Breed screening. Know the two or three conditions your breed dies of and screen for them: hearts in Cavaliers, Dobermans and Saint Bernards; hips and elbows in every large breed; eyes in Poodles and Cattle Dogs; the MDR1 gene in herding breeds.
- Spay and neuter with timing by size. Sterilized dogs lived longer on average in the 70,574-dog Hoffman study, but large and giant breeds do better waiting until growth plates close.
- Keep a lean body condition (ribs easy to feel, a visible waist from above). Brush teeth or use a vet-approved dental care routine and get professional cleanings when your vet recommends them. Book preventive visits twice a year after age 7 for small dogs and age 5 for giants, with bloodwork. Run the breed-specific screens: heart for Cavaliers and Dobermans, hips and elbows for large breeds, eyes for Poodles, kidneys and liver for Shih Tzus. Discuss spay and neuter timing by breed size with your vet. Insure early, before pre-existing conditions are on the record.
Senior nutrition and comfort round it out. A senior diet portioned to the dog's ideal weight matters more than any single ingredient; Petful's guide to whether fresh diets for senior dogs are better weighs the options. Most senior dog supplements have thin evidence, with omega-3 fatty acids and glucosamine-chondroitin for arthritic dogs the exceptions worth discussing with your vet. Daily exercise scaled to the dog keeps muscle on an old body, and an orthopedic bed that supports arthritic joints helps a senior dog rest and get up without strain. Petful's senior dog health guide covers the rest of the senior years.
Frequently Asked Questions About Long-Lived Dogs
Yes for a small dog, and unusual for a big one. Seventeen is common for small breeds such as Chihuahuas, Toy Poodles, Maltese and Papillons; the AKC ranges for those breeds run to 16, 18 and 19 years, and the 2024 UK population study found about 5 percent of small and medium dogs were still alive at 18. It is rare for giant breeds: a 17-year-old Saint Bernard, Great Dane or Bernese Mountain Dog would be far outside anything the breed data records, where medians sit near 9 years.
On average, sterilized dogs lived longer in the largest study on the question. A 2013 analysis of more than 70,000 veterinary teaching-hospital records found intact dogs died at a mean age of 7.9 years versus 9.4 years for sterilized dogs, with life expectancy up 13.8 percent in males and 26.3 percent in females, mostly because sterilized dogs died less often from infection and trauma. The trade-off is a higher share of deaths from cancer and immune disease, and joint problems rise when large breeds are altered very young, so timing by breed size matters: many vets now suggest waiting until growth plates close in large and giant breeds while keeping the earlier schedule for small dogs. Petful's spay versus neuter guide covers the timing discussion in detail.
Heart valve disease and organ failure in old age, not the cancers that cut giant breeds short. In the 74,556-dog mortality study from the Veterinary Medical Database, smaller breeds died more often from endocrine causes, and older dogs of every size died most often from neurologic and neoplastic causes. In practice that means degenerative mitral valve disease (especially in Cavaliers, Chihuahuas, Maltese and Dachshunds), kidney disease, Cushing's disease and diabetes, and the systemic effects of untreated dental disease, which is nearly universal in small dogs past age 10. Regular senior bloodwork and a heart check catch most of these while they are still manageable.
Often yes, provided you enroll before pre-existing conditions appear, because insurers exclude anything diagnosed before the policy starts. Insuring is a standalone owner decision, and cost planning for a 15-year commitment is where it pays off. A long-lived small dog will spend 5 to 8 of its years as a senior, when dental extractions, heart medication and diagnostics add up, and that is the stretch a policy is built for. Weigh senior premiums against the likely claims: premiums rise with age, so a dog insured at 2 pays less per year over its life than one insured at 9, and a 15-year commitment gives premiums time to pay for themselves. If premiums do not fit the budget, a dedicated savings account funded monthly is the honest alternative.
Four levers have evidence behind them: keep a lean body condition (overweight Yorkshire Terriers lost about 2.5 years in a 50,787-dog study), keep the teeth clean (more frequent dental scaling was linked to a lower risk of death after age 2 in a 2.37-million-dog analysis), stay on preventive care with vaccines, parasite control and twice-yearly senior visits, and screen for the conditions your breed is known for. Add daily exercise scaled to the dog and a diet portioned to its ideal weight, then read the How to Help Your Dog Live Longer section above for the full plan.
Carol Bryant is the founder FidoseofReality.com and SmartDogCopy.com. A pet product expert, Carol is the Past President of the Dog Writers Association of America (DWAA) and winner of Best Dog Blog. A dog lover of the highest order is how Gayle King introduced Carol when she appeared with her Cocker Spaniel on Oprah Radio’s Gayle King Show to dish dogs. She helps pet, animal, and lifestyle brands achieve copywriting and content marketing success using well-trained words that work and is well-known in the pet industry.
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