Shih Tzu Growth Chart
Shih Tzus are sturdy toy-type companions with a broad head and short legs. Growth slows after the first year but body condition still matters. Regular grooming weight checks help spot trends without stressing the dog.
Shih Tzu weight by age
Typical weight ranges based on Shih Tzu adult size and standard growth curves. Individual puppies may vary.
| Age | Expected weight (low–high) |
|---|---|
| 8 weeks | 1.6–4.9 lb |
| 12 weeks | 2.5–6.4 lb |
| 16 weeks | 3.2–7.8 lb |
| 20 weeks | 3.9–9.1 lb |
| 24 weeks | 4.6–10.2 lb |
| 32 weeks | 5.8–12.5 lb |
| 40 weeks | 7–14.6 lb |
| 1 year | 8.2–16 lb |
Shih Tzu Growth Stages
Understanding the typical growth stages helps you know what to expect as your Shih Tzu puppy grows.
Neonatal
0–2 weeksPuppies are born with eyes and ears closed, relying entirely on their mother. Rapid weight gain occurs during this period.
Socialization
3–12 weeksEyes and ears open. Puppies begin to explore, play, and learn social behaviors. This is a critical period for development.
Juvenile
3–6 monthsRapid growth continues. Puppies become more independent, start teething, and develop coordination.
Adolescent
6–10 monthsGrowth rate begins to slow. Puppies reach sexual maturity and may test boundaries. Muscle mass develops.
Young Adult
10–12 monthsGrowth is nearly complete. Your puppy is filling out and approaching adult proportions.
Adult
12+ monthsYour puppy has reached their full adult size. Weight should remain relatively stable with proper nutrition.
Calculate Your Shih Tzu Puppy's Adult Weight
Enter your Shih Tzu puppy's age and current weight for an estimated adult weight range.
Enter your puppy's details to see the estimate
Shih Tzu FAQ
How much will my Shih Tzu puppy weigh as an adult?
Adult Shih Tzus are classified as small dogs, with typical finished weights of 9 to 16 lb. Males may weigh 9–16 lb and females 9–16 lb. These are estimated ranges—individual genetics and parent size may shift results above or below breed norms.
At what age is a Shih Tzu fully grown?
Shih Tzus are small dogs that typically reach most of their adult weight between 9 and 12 months. Shih Tzus mature on a small-breed schedule despite their sturdy toy-type frame. Slight muscle or coat fill may continue briefly after height stabilizes, so weekly weigh-ins give a clearer picture than a single reading.
How accurate is a Shih Tzu puppy weight chart?
A Shih Tzu puppy chart provides estimated trends rather than fixed outcomes. Real spread from sturdy toy-type bone is normal, and long coats hide whether weight is frame or fluff. Parent sizes and body condition may refine predictions when available.