Which Dog Breed Has the Longest Lifespan, and Which Has the Shortest?

Which Dog Breed Has the Longest Lifespan?

One of the largest recent investigations of dog breed lifespan came from a 2024 Scientific Reports analysis of 584,734 dogs in the United Kingdom. The researchers brought together information from 18 sources, including veterinary groups, breed registries, pet insurance companies, animal welfare organizations, and academic institutions. Of the 155 breeds evaluated, the Lancashire Heeler had the highest estimated median survival at 15.4 years. The Tibetan Spaniel followed at 15.2 years, while the Papillon reached 14.5 years and the Miniature Dachshund 14.0 years.

That places the Lancashire Heeler at the top of this particular population and analysis. Other longevity studies include different breeds, different populations, and different ways of measuring survival, so the breed at the top can change.

A 2022 VetCompass life-table study of dogs receiving primary veterinary care in the UK evaluated 18 individual breeds rather than 155. In that population, the Jack Russell Terrier had the highest life expectancy at birth at 12.72 years.

The Lancashire Heeler was not one of the 18 breeds included in that analysis. Comparing the two studies helps explain why there is no permanent worldwide ranking of dog breeds by lifespan.

Popular breeds provide additional context. In the larger 2024 analysis, the Labrador Retriever had an estimated median survival of 13.1 years, while the Miniature Dachshund reached 14.0 years. Neither occupied the first position, but both show that relatively long breed-level survival is not limited to uncommon dogs at the top of the table.

Which Dog Breed Has the Shortest Lifespan?

At the other end of the 2024 dataset, the Caucasian Shepherd Dog, also called the Caucasian Ovcharka by the United Kennel Club had the lowest estimated median survival at 5.4 years. The Presa Canario followed at 7.7 years and the Cane Corso at 8.1 years.

The Caucasian Shepherd estimate came from a much smaller population than many of the better-known breeds in the study. Only 52 dogs were represented, including 22 recorded deaths. The estimate therefore carries more uncertainty than figures calculated from populations containing thousands of dogs.

Several breeds familiar to American families also appeared toward the shorter-lived end. The French Bulldog and Bulldog each had estimated median survival of 9.8 years, while the Great Dane reached 10.6 years. The Pug reached 11.6 years, compared with 13.1 years for Labrador Retrievers in the same analysis.

The earlier VetCompass study produced a much lower figure for one of those breeds. French Bulldogs had the lowest life expectancy at birth among its 18 individual breeds, at 4.53 years. In the larger 2024 dataset, their estimated median survival was 9.8 years.

A statement such as “French Bulldogs live 4.5 years on average” or “French Bulldogs have a 9.8 year median survivial rate” is hard to directly compare without understanding the population and statistical methods behind the estimates. Breed lifespan numbers are most useful when that context stays attached to them.

What Does Median Survival Mean for These Breed Lifespan Numbers?

Many of the breed figures on this page are median survival estimates, not average lifespans. If a breed has a median survival of 13 years, that means the estimated survival curve reaches 50% at about age 13: roughly half of the dogs in that studied population are estimated to survive beyond that age and half are not.

That does not mean most dogs die at exactly 13 years, and it does not set a maximum lifespan for the breed. Median survival is best read as a population-level midpoint that helps researchers compare breeds while reducing the influence of a small number of exceptionally old dogs.

Why Dog Lifespan Studies Can Give Different Answers

Dog lifespan sounds like a simple measurement. Record how old dogs are when they die, calculate an average, and compare breeds.

Real dog populations make the calculation more complicated.

Researchers may work with veterinary records, insurance databases, breed registries, dog parent questionnaires, animal welfare records, or combinations of those sources. Each captures a somewhat different population. Geography changes the mix further. Breeds common in the United Kingdom may be uncommon in the United States, while breeding populations, veterinary access, environmental exposures, and changes in breed popularity can also differ between countries.

Researchers also measure longevity in several ways.

Median Lifespan, Average Lifespan, and Life Expectancy Measure Different Things

Median lifespan, or median survival, is the age at which the estimated survival curve reaches 50%. A survival curve tracks the proportion of a population estimated to still be alive as age increases. It begins near 100% and gradually falls as deaths occur within the population.

If a breed has a median survival of 10 years, the curve reaches the 50% survival point at about age 10. That does not mean most dogs die at exactly 10 years, and it is not the same as saying 10 years is the average age of death. Some dogs in that population die well before age 10, while others live for several years beyond it.

A dog that dies before the breed’s median falls on the earlier side of that population’s survival distribution. A dog that lives beyond the median has survived longer than at least half of the population represented by that curve. Living beyond the median does not necessarily make a dog an unusually extreme outlier. At the median itself, roughly half of the estimated population is still alive.

The shape of the survival curve also provides information that the median alone cannot show. A curve that declines gradually indicates deaths spread across a wider range of ages. A steeper drop means a larger proportion of the population is dying within a narrower age range. Two breeds could even have similar median survival while showing different patterns before and after that halfway point.

Median Survival vs Mean Lifespan

Mean lifespan is different. It is the arithmetic average of the ages represented in a dataset. A small number of very long-lived or very short-lived dogs can pull that average higher or lower, particularly when lifespan values are unevenly distributed.

Life expectancy is another related measurement. It can be calculated with a life table, which estimates the probability of surviving from one age interval to the next. Life expectancy at birth asks how many additional years a dog at age zero could be expected to live based on the mortality pattern observed in that population. Life expectancy can also be recalculated at later ages because a dog that has already survived to age 8 or 10 has passed through some of the earlier mortality risk.

The 2022 VetCompass analysis used life tables, which is why it reported 12.72 years for the Jack Russell Terrier as life expectancy at age zero. The 2024 study used survival analysis and reported median survival, producing the Lancashire Heeler’s 15.4-year estimate.

Dog lifespan charts can therefore show different numbers without necessarily contradicting one another. The population studied, the dogs still alive when the analysis was performed, and the way longevity was calculated all affect what the final number represents.

Living Dogs Create a Challenge for Lifespan Research

Many dogs included in longevity datasets are still alive when the data are analyzed.

Researchers call these right-censored observations. A dog’s survival is known up to a certain age, but its eventual lifespan is not yet known.

This becomes especially relevant when a breed has recently become more popular. Its population may contain many young dogs because substantially more puppies were born during the previous several years. Those dogs still contribute useful survival information, but their eventual ages at death remain unknown.

A study examining more than 40,000 dogs across 118 breeds investigated how incomplete birth cohorts can affect longevity comparisons. After accounting for those incomplete lifespans, the analysis found relationships between longevity, adult body size, and genetic diversity.

A useful dog breed lifespan estimate depends on more than collecting ages. Researchers also need to know which dogs were observed, how long they were followed, and how unfinished lifespans were handled.

What Do Dog Lifespan Studies Outside the UK Show?

Dog longevity research outside the United Kingdom generally supports some of the same broad patterns seen in UK datasets, especially the relationship between body size and lifespan. A 2020 U.S. study of 20,970 privately owned dogs from three primary-care veterinary clinics found that larger dogs had shorter lifespans, while greater genetic diversity was associated with somewhat longer median survival.

The U.S. study also found no significant overall lifespan difference between purebred and mixed-breed dogs after other factors were considered. That does not mean breed ancestry is unimportant. It shows that size, genetics, and population structure can matter more than a simple purebred-versus-mixed-breed label.

Large-scale U.S. aging research is also expanding through the Dog Aging Project, which follows tens of thousands of companion dogs and collects information on genetics, environment, health history, and aging. Recent work from the project has continued to examine how body size, biological aging, and mortality risk differ across dogs.

Researchers still face an important limitation when comparing lifespan data between countries. Studies often use different populations, definitions, and statistical methods, so a breed estimate from the United States cannot always be compared directly with a median survival estimate from the United Kingdom. For that reason, the 2024 UK study remains especially useful for the breed-by-breed timeline on this page because the breeds were analyzed within the same large dataset using the same method.

Why Small Dog Breeds Often Live Longer Than Large Dog Breeds

Across canine longevity research, one of the clearest recurring patterns involves body size.

Dogs are especially useful for examining this relationship because members of the same species can differ enormously in mature body size. A Chihuahua and a Great Dane share the same basic canine physiology, but they reach adulthood through very different patterns of growth.

In the 2024 UK study, small breeds had an estimated median survival of 12.7 years, compared with 12.5 years for medium breeds and 11.9 years for large breeds. Individual breeds make the size pattern easier to see. Miniature Dachshunds reached 14.0 years, while Great Danes reached 10.6 years.

Adult size is the visible result of a much larger developmental process. Large and giant dogs must build far more bone, muscle, connective tissue, blood vessels, and other tissue during growth. That requires rapid cell division and coordinated activity from growth hormones, metabolic pathways, and skeletal development.

Those developmental differences are part of the biological background researchers examine when asking why large dogs tend to age faster and have shorter lifespans at the population level. Individual dogs can still fall well outside the pattern.

Genetics and Breed History Also Shape Dog Longevity

Body size cannot account for all of the differences between breeds.

Dog breeds are partially isolated genetic populations created through selective breeding. Over generations, people have selected dogs for traits including size, coat, behavior, working ability, skull shape, limb proportions, and many other characteristics.

Selection also changes which genetic variants are carried forward.

When a population develops from a limited number of founders, or particular dogs contribute heavily to later generations, genetic diversity can narrow. Related dogs are then more likely to inherit some of the same variants from both sides of their pedigree.

Many inherited variants have little or no effect on health. Others help create the characteristics associated with a breed. Some can increase susceptibility to particular inherited disorders or biological problems.

The analysis of more than 40,000 dogs across 118 breeds found an association between greater genetic diversity and longer mean lifespan after incomplete birth cohorts were taken into account.

Two breeds of similar body size can therefore have different longevity patterns because their ancestry, population structure, inherited health risks, and generations of selection are different.

Body Shape Can Affect Lifespan Alongside Body Size

Longevity patterns also differ among dogs with different physical conformations.

One example involves brachycephalic dogs, meaning dogs bred for a shortened skull and relatively flat face. Brachycephaly describes skull shape. As shortening becomes more pronounced, it can also change the available anatomy of the airway, eyes, teeth, skin folds, spine, and surrounding tissues.

In the 2024 analysis, brachycephalic purebred dogs had an estimated median survival of 11.2 years, compared with 12.8 years for mesocephalic dogs, whose skull proportions fall into a more moderate range.

The individual breed numbers put familiar faces on that population pattern. French Bulldogs and Bulldogs both had estimated median survival of 9.8 years, while Pugs reached 11.6 years. Labrador Retrievers and Border Collies each reached 13.1 years in the same dataset.

Skull shape overlaps with many other breed characteristics, including body size, ancestry, genetic disease risk, orthopedic structure, and reproductive health. Conformation is therefore one part of a broader biological picture rather than a single explanation for breed lifespan.

Shorter-Lived Dog Breeds Can Teach More When Health Is Tracked Over Time

A lifespan estimate can show that dogs in one population tend to die earlier than dogs in another. Cause-of-death records, health histories, and pedigrees provide clues about what contributes to that difference.

Bernese Mountain Dogs are a useful example. They were not the shortest-lived breed in the 2024 UK analysis, but they have repeatedly appeared among breeds with comparatively shorter lifespans.

A Swiss study of Bernese Mountain Dog longevity and causes of death reported a median life expectancy of 8.4 years in the population studied. Among dogs for which cause of death was available, neoplasia, meaning abnormal tissue growth that includes cancer, was the most frequently reported disease process associated with death.

Bernese Mountain Dogs also have an unusually extensive breed-health resource through the Berner-Garde Foundation. For decades, Berner-Garde has collected pedigree information alongside health records that can include testing, diagnoses, age, and cause of death. Linking health information to family relationships allows patterns to be examined across related dogs and successive generations.

A breed’s average age at death can identify a population worth investigating more closely. Long-term records can then help narrow attention toward particular diseases, family lines, ages of onset, or changes occurring across generations.

Purebred and Mixed-Breed Dog Lifespan Is More Complicated Than It Sounds

Mixed-breed dogs are often described as longer-lived because greater genetic diversity can reduce some risks associated with inheriting identical variants through closely related ancestry. Population studies do not produce one simple mixed-breed-versus-purebred rule.

In the 2024 UK dataset, purebred dogs had an estimated median survival of 12.7 years compared with 12.0 years for the broad crossbred category. The crossbred group covered dogs with widely different ancestry, sizes, body shapes, and breeding histories.

A first-generation cross between two named breeds, a dog descended from several breeds, and a dog with largely unknown ancestry may all fall under a crossbred label. Those dogs may have little in common biologically beyond not belonging to a single recognized breed.

Other longevity research has found associations between greater genetic diversity and longer lifespan across breeds. Breed designation, genetic diversity, body size, and individual ancestry describe related but different parts of the picture.

A mixed-breed dog can be very large, inherit disease-associated variants, or develop health problems unrelated to ancestry. A purebred dog may come from a population where inherited disease and longevity have been tracked across many generations. The label alone leaves much of the dog’s biology unexplained.

A Dog Breed’s Average Lifespan Cannot Predict One Dog’s Lifespan

Dog breed lifespan estimates describe populations, not individual outcomes. If a breed has a median survival of 10 years, that means the estimated survival curve reaches 50% around that age. It does not mean most dogs in the breed die at 10 years or that an individual dog should be expected to live exactly that long.

If a breed has a median survival of 10 years, the estimate means the survival curve for that studied population reaches its halfway point around that age. Some dogs die much younger. Others live for years beyond the median.

Ancestry contributes to the biological starting point, while many influences continue accumulating throughout life.

Body condition changes the metabolic and mechanical load placed on tissues. Physical activity affects muscle, cardiovascular function, mobility, and metabolism. Nutrition supplies the energy and raw materials used to build and repair tissue. Dental health, infectious disease prevention, environmental exposures, injuries, reproductive history, veterinary care, and the timing of disease detection can all influence an individual dog’s health trajectory.

Chance is part of biology as well. Two closely related dogs living in similar environments can still have very different health histories.

Healthspan provides another way to examine longevity. Lifespan measures how long a dog remains alive. Healthspan considers how much of that time is spent with good physical function, mobility, cognitive ability, and resilience.

A breed could gain years of average lifespan while still experiencing important health problems relatively early. Following lifespan and health together provides a fuller picture of how a breed is aging.

What the Longest- and Shortest-Lived Dog Breeds Can Teach

In the large 2024 UK longevity analysis, the Lancashire Heeler had the highest estimated median survival at 15.4 years, while the Caucasian Shepherd Dog had the lowest at 5.4 years.

The breeds between those endpoints make the longevity landscape easier to recognize. Miniature Dachshunds reached 14.0 years, Labrador Retrievers 13.1 years, Pugs 11.6 years, Great Danes 10.6 years, and French Bulldogs 9.8 years in the same study.

Across those populations, body size, growth, genetics, breed history, physical conformation, inherited health risks, and genetic diversity intersect in different combinations. The numbers can also shift when researchers study different populations or use different statistical methods.

Long-term breed health records add another layer. When lifespan data can be connected with pedigrees, diagnoses, ages of onset, and causes of death, researchers and breed communities can investigate why dogs in one population reach older ages than dogs in another. That gives canine longevity research far more value than a simple ranking of breeds from longest-lived to shortest-lived.