Updated · Published by Radif Partners
Shih Tzu Weight & Growth Chart
Complete weight guide with growth charts for male and female Shih Tzus from puppy to adult.
The Shih Tzu belongs to the Toy group and originates from China. Adults typically weigh between 9 and 16 pounds, standing 9 to 10 inches at the shoulder. Life expectancy runs from 10 to 18 years, and the figures on this page describe that range rather than a single average, because the spread is what matters when you are deciding. Running costs settle around $91 a month once the dog is past puppyhood, before insurance and before anything unexpected. These numbers come from published breed standards and, where a standard is silent, from longevity and veterinary studies; they describe the breed as a population and not the dog in front of you. Line, upbringing, early socialisation and simple chance move an individual well away from the typical profile, and two dogs of the same breed often differ more than two dogs of different breeds. Nothing here is a diagnosis: for a specific animal, a veterinary surgeon who has examined it will always know more than a table.
Shih Tzu Weight Overview
Adults typically weigh 9 to 16 pounds. Despite their luxurious coat, they are surprisingly solid and muscular underneath all that hair.. Males tend to be larger at 9–16 lbs versus 7–14 lbs for females.
Genetics, diet, and exercise all play a role in determining your dog's ideal weight. The growth chart below provides a general timeline for weight gain from puppyhood through adulthood.
Shih Tzu Growth Chart
When Does a Shih Tzu Stop Growing?
Expect your Shih Tzu to reach adult height of 9–10 inches by 12–15 months. Full body maturity, including muscle development toward the 9–16 lb target, may continue until 14–18 months.
Growth is influenced by genetics, nutrition quality, and spay/neuter timing. Their flat face creates breathing challenges, and their prominent eyes are prone to injuries and dryness. Regular veterinary eye exams are recommended..
Shih Tzu Male vs Female Size Differences
Male and female Shih Tzus differ noticeably in size, a pattern common in small breeds. Males typically weigh 9–16 lbs, while females weigh 7–14 lbs. Both sexes stand 9–10 inches tall at the shoulder, though males tend to fall at the upper end of this range.
These size differences can influence practical ownership decisions. Larger males require more food, larger crate sizes, and stronger leash handling. Female Shih Tzus at the lower weight range may be easier to manage physically for smaller handlers or families with children. Both sexes share the same temperament and health profile, so size preference should be a practical decision rather than a temperament-based one.
Is My Shih Tzu Overweight?
Assessing your Shih Tzu's body condition (healthy range: 9–16 lbs):
- Rib check: Run your hands along the ribcage, you should feel individual ribs under a slight fat layer
- Overhead view: A defined waist should be visible between ribs and hips
- Side profile: The abdomen should tuck upward behind the last rib
Overweight Shih Tzus face higher risks of Brachycephalic Airway Syndrome, joint problems, and shortened lifespan. Even for a small-sized breed, excess weight significantly impacts joint health and overall wellbeing. Work with your vet to adjust feeding and exercise if needed.
Shih Tzu Weight Management Tips
Maintaining your Shih Tzu at a healthy weight between 9 and 16 lbs is one of the most impactful things you can do for their long-term health. Studies consistently show that lean dogs live an average of 1.8–2.5 years longer than overweight dogs of the same breed.
Portion control: Use a measuring cup for every meal rather than estimating. Feed the amount recommended for your Shih Tzu's ideal weight, not their current weight if they are overweight. Divide daily food into two meals for adults and three meals for puppies under six months.
Treat management: Treats should not exceed 10% of daily caloric intake. Use small, low-calorie training treats and consider using pieces of your dog's regular kibble as rewards during training sessions. Avoid table scraps entirely, as they add unpredictable calories and can introduce foods that are toxic to dogs.
Exercise alignment: With an exercise needs rating of 2/5, the Shih Tzu requires lighter exercise. Even with lower activity needs, daily movement is important for maintaining muscle tone and healthy weight. Short walks and play sessions help prevent the gradual weight creep that affects less active breeds.
Regular weigh-ins: Weigh your Shih Tzu monthly and track the trend. Gradual weight gain of even one to two pounds per month can lead to significant obesity over time. Your veterinarian can establish your dog's ideal weight during wellness visits and recommend caloric adjustments as needed.
Feeding Recommendation
Feed an adult Shih Tzu approximately 0.5–0.3 cups of quality kibble daily, split into two meals. Males (9–16 lbs) may need slightly more than females (7–14 lbs). Adults typically weigh 9 to 16 pounds. Despite their luxurious coat, they are surprisingly solid and muscular underneath all that hair.. With moderate energy (2/5), portions at the middle of guidelines usually suffice.
Shih Tzu Weight by Age Table
The following table shows expected weight ranges for male and female Shih Tzus at key developmental milestones. Individual dogs may fall slightly outside these ranges depending on genetics, nutrition, and activity level. Consult your veterinarian if your Shih Tzu's weight deviates significantly from these benchmarks.
| Age | Male (lbs) | Female (lbs) |
|---|---|---|
| 3 months | 3.6–4.4 | 3.0–3.8 |
| 6 months | 7.9–9.7 | 6.7–8.3 |
| 9 months | 11.5–14.1 | 9.7–12.0 |
| 12 months | 14.3–17.7 | 12.2–15.0 |
Health Risks of Incorrect Weight in Shih Tzus
Both underweight and overweight conditions pose serious health risks for the Shih Tzu. Understanding these risks reinforces the importance of maintaining your dog within the 9–16 lb target range.
Overweight risks: Excess weight places additional strain on joints, increasing the risk and severity of conditions like Brachycephalic Airway Syndrome. Overweight Shih Tzus also face higher rates of diabetes, heart disease, respiratory compromise, heat intolerance, and reduced lifespan. Even moderate excess weight, just 10–15% above ideal, shortens life expectancy and reduces quality of life.
Underweight risks: A Shih Tzu consistently below 9 lbs may be experiencing inadequate nutrition, parasitic infection, dental problems that prevent eating, or underlying illness. Underweight dogs have weakened immune systems, poor coat quality, reduced energy, and slower healing. If your Shih Tzu appears thin despite normal feeding, veterinary examination is essential to rule out medical causes.
Frequently Asked Questions
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