Shih Tzu Lifespan Dog. The median lifespan of the breed according to the uk kennel club is 13 years and 2 months. This is an approximation and there are always exceptions.
The average lifespan of a shih tzu is 13 years, although some can live even longer. Shih tzu lifespan compares well to the average lifespan of all purebred dogs taken together, but some hereditary health conditions mean that a long life doesn’t always equal good quality of life. The average lifespan of a shih tzu dog is between 10 and 16 years.
