Shih Tzus typically live 10 to 16 years, with around 13 years the commonly cited average. The largest study of the breed — 11,082 UK Shih Tzus under veterinary care — found a median age at death of 12.7 years, which makes the Shih Tzu long-lived for a purebred dog. Dental disease, body weight and heart disease are the three factors most within an owner’s control.
What the Data Actually Says
Most breed pages quote a lifespan range without a source. There is a better answer. In 2024, researchers at the Royal Veterinary College’s VetCompass programme (Dale et al.) analysed 11,082 Shih Tzus drawn from 336,865 dogs under UK primary veterinary care, and reported a median age at death of 12.7 years, with an interquartile range of 8.7 to 14.3 years and individual dogs recorded up to 19.9 years. There was no significant difference between males and females.
For context, the same body of research reports median ages at death of roughly 3.7 years for French Bulldogs and 7.2 years for Bulldogs. The Shih Tzu, despite its flat face, is a comparatively robust breed — the researchers described its health characteristics as “surprisingly good.”
One honest caveat: a median age at death is not the same as life expectancy at birth. It describes the dogs that died during the study window, so treat 12.7 years as a well-evidenced benchmark rather than a prediction for your individual dog.
Shih Tzu Life Stages
| Stage | Age | What matters most |
|---|---|---|
| Puppy | 0–12 months | Vaccination course, socialisation, screening for congenital kidney disease |
| Young adult | 1–7 years | Weight control, dental routine, keeping the dog cool |
| Mature | 7–10 years | Annual bloodwork, listening for heart murmurs, joint watch |
| Senior | 10–13 years | Twice-yearly vet visits, dental review, mobility support |
| Geriatric | 13+ years | Quality-of-life monitoring, pain management, comfort |
A Shih Tzu is considered senior from about eight to ten years old. Because the breed often stays playful well into its teens, owners tend to notice ageing late — which is exactly why scheduled check-ups matter more than waiting for symptoms.
What Shih Tzus Usually Die From
The VetCompass study identified three leading causes of death, each accounting for 7.9% of cases:
- Enteropathy — chronic gastrointestinal disease.
- Heart disease — most often mitral valve disease, which develops with age and is typically first detected as a murmur during a routine examination.
- Poor quality of life — the category recorded when an owner and vet decide on euthanasia, usually driven by declining mobility, cognitive decline or unmanageable pain rather than one acute illness.
That third category is worth sitting with. For many Shih Tzus, the end of life is a decision rather than an event, and the things that push it earlier — arthritis, dental pain, obesity — are the things that respond to prevention.
The Health Problems That Shorten a Shih Tzu’s Life
- Periodontal disease was the single most common disorder in the study, affecting 9.5% of Shih Tzus. Small mouths crowd teeth, plaque builds fast, and untreated dental infection is linked to heart and kidney damage. It is also the most preventable condition on this list.
- Mitral valve disease is the main cardiac risk and the reason a stethoscope check at every annual visit is not a formality.
- Brachycephalic obstructive airway syndrome (BOAS) stems from the flat face. Noisy breathing, snoring and struggling in heat are not breed charm — they are signs worth raising with a vet.
- Renal dysplasia is a congenital kidney condition the breed is predisposed to. It shows in young dogs and is a reason to buy from a breeder who screens and can show health records.
- Intervertebral disc disease, patellar luxation and eye conditions — dry eye, corneal ulcers and, because of the shallow eye sockets, the risk of proptosis after trauma — round out the list.
Five Things That Add Years
- Keep the dog lean. A study of more than 50,000 dogs by the University of Liverpool and Waltham found overweight dogs lived up to two and a half years less than dogs at a healthy weight. Nothing else on this list has that much leverage. You should be able to feel your Shih Tzu’s ribs without pressing.
- Brush the teeth. Two to three times a week, with dog toothpaste, plus professional cleaning when your vet advises. This addresses the breed’s most common disorder directly.
- See the vet on schedule. Annually to age eight, twice yearly after. Heart murmurs and early kidney changes are found on routine checks, not by owners at home.
- Respect the flat face in heat. Walk early morning or after sunset, never in midday sun, and stop at the first sign of laboured breathing.
- Start with a well-bred puppy. Congenital kidney and eye problems are inherited. A breeder who screens and shows records is buying you years.
Shih Tzu Lifespan in Indian Conditions
Heat is the biggest local variable. A brachycephalic dog cools itself by panting, and panting is far less effective in a Delhi NCR summer — heatstroke is a genuine risk, not a theoretical one. Air conditioning or reliable cooling through peak summer, early and late walks, and constant access to water are longevity measures for this breed, not luxuries.
Smog season adds a second pressure. Delhi vets report a rise in respiratory and eye complaints in pets through the winter smog months, and a flat-faced dog with a compromised airway feels it first. Keep outdoor time short when the AQI is high.
Finally, plan financially. Pet insurance is still uncommon in India, and the years that matter most for a Shih Tzu’s lifespan — the senior decade — are also the expensive ones. Budgeting for dental cleanings, cardiac checks and senior bloodwork is part of getting to fourteen.
Signs Your Shih Tzu Is Ageing
Cloudier eyes, slower stairs, more sleep, reduced hearing, greying muzzle and new lumps are normal ageing markers worth mentioning at the next visit. Sudden weight loss, increased thirst and urination, coughing, laboured breathing, or a dog who stops greeting you are not routine ageing — call your vet.
Frequently Asked Questions
How long do Shih Tzus live on average?
Around 13 years, within a typical range of 10 to 16. The largest study of the breed found a median age at death of 12.7 years, with some dogs living past 19.
Do male or female Shih Tzus live longer?
Neither. The VetCompass study of 11,082 Shih Tzus found no significant difference in age at death between males and females.
What do Shih Tzus usually die from?
Chronic gastrointestinal disease, heart disease, and euthanasia due to declining quality of life were the three leading causes, each accounting for about 7.9% of deaths.
At what age is a Shih Tzu considered senior?
Between eight and ten years. Move to twice-yearly vet visits at that point, even if the dog seems perfectly well.
How can I help my Shih Tzu live longer?
Keep the dog lean, brush its teeth, keep vet appointments, avoid heat and exertion in summer, and start with a puppy from a breeder who screens for inherited kidney and eye disease.
Planning for the Long Haul
At The Barking Babies, we have placed puppies with over 15,000 Indian families since 2001, and a Shih Tzu is a twelve-to-fifteen-year commitment — through a senior decade that asks more of you than the puppy year did. Every puppy goes home with an adoption kit, health documentation and lifetime support from our team, because the questions that matter most usually arrive years after the puppy does.
