Shih Tzu Age Calculator — Dog Years to Human Years

About Shih Tzus

Shih Tzus are affectionate, outgoing toy breed dogs originally bred as companions for Chinese royalty. Their name translates to "little lion" in Mandarin, reflecting their regal heritage. Weighing 9-16 pounds, Shih Tzus have a wide life expectancy range of 10-16 years, with many living 14-16 years with proper care. They are known for their gorgeous long double coat, charming personality, and friendly disposition. As a brachycephalic (flat-faced) breed, they require special attention to breathing and temperature regulation throughout their lives.

Your Shih Tzu

Dog's Age

Months:

Human Age Equivalent

human years old

Young Adult

Expected Lifespan

10-16 years

Life % Used

31%

Puppy Young Adult Senior

Prime years — keep up with exercise and dental care.

Health Tip

Shih Tzus are brachycephalic — avoid overheating, clean facial folds daily, and never use a collar, always a harness.

Shih Tzu Age to Human Age Chart

Dog Age	Human Age (AKC Toy)	Life Stage
1 year	15 years	Puppy / Junior
2 years	21 years	Young Adult
3 years	25 years	Adult
4 years	29 years	Adult
5 years	33 years	Adult
6 years	37 years	Adult
7 years	41 years	Adult
8 years	45 years	Mature
9 years	49 years	Mature
10 years	53 years	Senior
11 years	57 years	Senior
12 years	61 years	Senior
13 years	65 years	Senior
14 years	69 years	Geriatric
15 years	73 years	Geriatric
16 years	77 years	Geriatric

Shih Tzu Life Expectancy

Shih Tzus have a broad life expectancy of 10-16 years. Their lifespan varies considerably depending on genetics, breeding quality, and health management. Poorly bred Shih Tzus with severe brachycephalic issues may have shorter lives, while well-bred dogs from health-screened parents frequently reach 14-16 years. The average is around 13 years. Their longevity depends heavily on respiratory health, dental care, weight management, and preventing eye injuries.

Common Health Issues in Shih Tzus

Shih Tzus have several breed-specific health concerns due to their flat face, prominent eyes, and long coat. Proactive care is essential throughout their lives.

Brachycephalic Obstructive Airway Syndrome (BOAS)Flat-faced Shih Tzus often have narrowed nostrils, elongated soft palate, and small trachea. Symptoms include snorting, snoring, exercise intolerance, and overheating. Avoid heat, stress, and vigorous exercise. Severe cases may need surgery.

Eye Problems (Corneal Ulcers, Dry Eye, Proptosis)Shih Tzus have prominent eyes that are vulnerable to injury, ulcers, and dry eye. Their eyes can even pop out (proptosis) with enough pressure. Daily eye cleaning and regular vet checks are essential. Never use a collar — neck pressure increases eye pressure.

Dental DiseaseLike most toy breeds, Shih Tzus have crowded mouths leading to rapid plaque buildup, gingivitis, and tooth loss. Poor dental health affects the heart, kidneys, and liver. Daily brushing and professional cleanings are essential.

Skin Fold DermatitisThe facial wrinkles and skin folds on Shih Tzus trap moisture and debris, leading to bacterial and yeast infections. Clean all facial folds daily with a soft, dry cloth. Watch for redness, odor, and discharge.

Ear InfectionsTheir floppy ears and narrow ear canals trap moisture, making infections common. Clean ears weekly and keep them dry. Watch for head shaking, odor, and redness.

Hip Dysplasia and Patellar LuxationDespite their small size, Shih Tzus are prone to hip dysplasia and loose kneecaps. Symptoms include limping, bunny-hopping, and reluctance to exercise. Weight management and joint supplements help manage mild cases.

Shih Tzu Care Tips by Age

Puppy (0-1 year)

Start grooming and handling early — Shih Tzus need daily coat care. Clean facial folds and eyes daily. Socialize gently with people and other calm dogs. Choose a reputable breeder who screens for brachycephalic issues. Use a harness from day one. Feed a high-quality small-breed puppy food. Avoid strenuous exercise in hot weather.

Junior to Adult (1-7 years)

Shih Tzus need moderate exercise — 20-30 minutes daily. They are indoor-loving dogs but enjoy short walks and play sessions. Grooming requires daily brushing and professional grooming every 4-6 weeks. Many owners keep their Shih Tzu in a "puppy cut" for easier care. Annual vet checkups with dental cleaning, eye exam, and respiratory evaluation are essential. Clean facial folds daily.

Mature to Senior (7+ years)

Around age 7-8, switch to bi-annual vet visits. Shih Tzus may show early signs of aging in their teeth, eyes, and joints. Maintain dental hygiene rigorously — dental disease accelerates aging. Monitor for cataracts, dry eye, and vision changes. Keep your Shih Tzu lean to reduce respiratory and joint stress. Soft, orthopedic bedding is beneficial.

Geriatric (10+ years)

Many Shih Tzus remain loving companions well into their mid-teens. Gentle care is key — short walks, soft bedding, and a warm environment. Monitor breathing closely — BOAS worsens with age. Eye care becomes more important as tear production decreases. Regular blood work, dental cleanings, and weight management help extend quality of life.

FAQ

When is a Shih Tzu considered a senior?

Shih Tzus enter their senior stage around 10-11 years. Given their broad 10-16 year lifespan, some individuals may show senior signs earlier while others remain sprightly well past 12. Bi-annual vet visits are recommended from age 8 onward.

Why do some Shih Tzus live longer than others?

Genetics and breeding quality are the biggest factors. Well-bred Shih Tzus from parents screened for BOAS, eye problems, and hip dysplasia live significantly longer. Poorly bred dogs with severe brachycephalic issues may have shortened lifespans due to respiratory complications.

How much grooming does a Shih Tzu need?

Shih Tzus have a long double coat that requires daily brushing to prevent mats and tangles. Professional grooming every 4-6 weeks is essential. Many owners keep the coat short ("puppy cut") for easier maintenance. Eye cleaning and face washing should be done daily to prevent tear staining and skin infections.

Are Shih Tzus good with children and other pets?

Shih Tzus are generally friendly and good with older children and other pets. However, their small size and prominent eyes make them vulnerable to injury. They do best in homes with gentle, respectful children. Supervise all interactions and teach children how to handle small dogs properly.

Use our Dog Age Calculator for a different breed, or check the full age conversion chart to compare across all breed sizes.