Use this Shih Tzu puppy weight calculator to predict how big your puppy will get. Shih Tzus are a toy breed that typically reaches full size by around 10 months.
Enter your puppy's current weight and age to predict their adult size
Estimates based on breed growth curves. Individual dogs vary with genetics and nutrition — check with your vet for a personalized read.
Indoor/outdoor enclosure — a good fit for toy and small breeds.
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| Age | Weight |
|---|---|
| Birth | 0.2 to 1 lbs |
| 2 Months | 2 to 5 lbs |
| 3 Months | 3 to 6 lbs |
| 4 Months | 4 to 8 lbs |
| 5 Months | 5 to 10 lbs |
| 6 Months | 6 to 11 lbs |
| 7 Months | 7 to 13 lbs |
| 9 Months | 8 to 14 lbs |
| 10 Months | 9 to 16 lbs |
| 1 Year | 9 to 16 lbs |
| 1.5 Years | 9 to 16 lbs |
| 2 Years | 9 to 16 lbs |
Estimated from typical toy-breed growth curves and the Shih Tzu's adult weight range. Individual puppies vary — use the calculator above for a prediction based on your puppy's actual current weight.
New breed data, growth tips, and puppy-parenting insights, plus our free printable puppy growth tracker.
As a brachycephalic (flat-faced) breed, Shih Tzus can have breathing sensitivity and are prone to eye issues including corneal ulceration and pigmentary keratitis given their prominent, bulbous eyes. A harness rather than a collar is recommended given their short muzzle and airway.
A quality small-breed diet in measured portions; watch weight since it compounds breathing effort in a brachycephalic dog.
The long double coat grows continuously and mats easily — daily brushing is needed if kept long, or many owners opt for a shorter "puppy cut" for easier upkeep. Eyes should be wiped daily to prevent tear staining.
Friendly and eager to please, Shih Tzus respond well to positive reinforcement; early socialization helps since the breed can otherwise become a bit vocal or wary of strangers.
The Shih Tzu ("lion dog") was bred in Tibet and refined in the Chinese imperial court, prized as a companion breed associated with Buddhism and kept by emperors. The breed nearly vanished after China's Communist Revolution; a small number saved by Lady Brownrigg and diplomats stationed in China preserved the bloodline in England, and the AKC recognized the breed in 1969.
The standard describes a proud, arrogant carriage befitting the breed's history as a valued palace pet — a sturdy, lively toy dog bred purely for companionship, not for work.
