Shih Tzu Lifespan

The average Shih Tzu lifespan is 10–16 years. With excellent care, some live longer; with poor care or bad luck, much shorter. Here’s what determines lifespan and how to maximize it.

Typical Lifespan

Most Shih Tzus live 10–16 years. Smaller dogs of this breed type tend toward the upper end; larger individuals trend lower. Females often outlive males by 1–2 years on average.

What Shortens Lifespan

• Obesity: the single biggest preventable factor (cuts 2–3 years)
• Untreated dental disease: linked to heart and kidney failure
• Skipped vet care: misses early-stage problems
• Genetic conditions: brachycephalic airway syndrome (mild), intervertebral disc disease (IVDD), patellar luxation are common in Shih Tzus
• Accidents: off-leash mishaps, household toxins

What Extends Lifespan

Maintaining ideal body weight throughout life. Daily exercise (30–40 minutes). High-quality food. Annual vet visits (twice yearly after age 7). Dental cleanings. Mental enrichment. Strong human-dog bond reduces stress hormones that age dogs.

Senior Years

The Shih Tzu is considered senior at around 7–8 years. Senior care includes: more frequent vet exams, joint supplements if recommended, lower-calorie/senior-formula food, gentler exercise, and watching closely for the breed’s predisposed conditions.

Knowing When It’s Time

End-of-life decisions are deeply personal. Quality-of-life scales (Lap of Love’s HHHHHMM scale) help. Most owners err on the side of waiting too long; if your Shih Tzu has more bad days than good, it’s time to talk to your vet.