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Shih Tzu age in human years

sitting brown shih tzu dog with dark background

Shih Tzu is a small dog breed adored for charming looks, generally great behavior, and overall friendliness towards people and other dogs.

Shih Tzu is a small dog, weighing between 9 to 16 pounds (4 to 7 kg) and with an average lifespan of 14 years (which is longer than the average dog's life expectancy). They are not prone to many health issues, which gives Shih Tzu a better chance of living till old age.

If you have a Shih Tzu, you might wonder how old your dog is in human years. To answer this question you have to know your Shih Tzu's age. Then convert it using these estimations:

  • the first Shih Tzu's year is equal to 15 human years;
  • the second year adds 9 more years to the human age;
  • each subsequent year is equal to 4 years in human years.

Here’s a table you can use to find a Shih Tzu age equivalent in human years:

Shih Tzu age Human age
1 year 15 years
2 years 24 years
3 years 28 years
4 years 32 years
5 years 36 years
6 years 40 years
7 years 44 years
8 years 48 years
9 years 52 years
10 years 56 years
11 years 60 years
12 years 64 years
13 years 68 years
14 years 72 years
15 years 76 years
16 years 80 years
17 years 84 years
18 years 88 years
19 years 92 years
20 years 96 years

Some interesting facts:

  • Shih Tzu life expectancy is similar to the lifespan of such breeds as Bichon Frise, Pomeranian, Pekingese, and Yorkshire Terrier
  • The oldest documented Shih Tzu was 23 years old (108 in human age equivalent)

Shih Tzu age chart

shih tzu age in human years chart