Shih Tzu Puppy Weight Calculator & Growth Chart
A solid, compact toy breed with surprisingly dense bone structure beneath a luxurious double coat. Reaches full mature skeletal frame by 10 months.
Shih Tzu Weight Calculator
Estimated Adult Weight
Shih Tzu Pediatric Growth Trajectory
Biological sigmoid curve showing healthy weight progression by age (weeks).
Shaded area represents healthy ±1 standard deviation AKC breed corridor.
Growth Velocity Note
Steady toy growth curve, gaining approximately 0.5 to 1 lb per week in early puppyhood.
Veterinary Feeding Guidance:
Feed small-bite kibble designed for brachycephalic toy breeds to ensure ease of grasping and chewing.
Shih Tzu Week-by-Week Weight Milestones
Reference data for healthy Shih Tzu puppies based on veterinary pediatric percentiles.
| Puppy Age | Expected Weight (lbs) | Expected Weight (kg) | Developmental Milestone |
|---|---|---|---|
| 8 Weeks (2 mo) | 2.5–4.5 lbs | 1.1–2.0 kg | Sturdy toy foundation |
| 12 Weeks (3 mo) | 4.5–7.5 lbs | 2.0–3.4 kg | ~50% mature weight |
| 16 Weeks (4 mo) | 6.5–10.0 lbs | 2.9–4.5 kg | ~65% adult weight |
| 24 Weeks (6 mo) | 8.0–13.0 lbs | 3.6–5.9 kg | Height stabilization |
| 36 Weeks (8 mo) | 9.0–15.0 lbs | 4.1–6.8 kg | Near adult weight |
| 52 Weeks (12 mo) | 9.0–16.0 lbs | 4.1–7.3 kg | Full AKC adult weight |
When Do Shih Tzu Growth Plates Close?
For the Shih Tzu (toy breed classification), epiphyseal growth plates typically close between 9–11 months. Until these cartilaginous zones calcify into solid bone, the skeletal structure is particularly vulnerable to impact trauma.
- Avoid repetitive high-impact jumping (such as off tall beds or out of SUVs).
- Postpone intense agility hurdles or forced running on concrete until growth plate fusion is complete.
- Maintain lean body condition: excess puppy fat places unnecessary biomechanical torque on immature ligaments.
Nutrition & Weight Maintenance
Caloric demand peaks between 8 and 16 weeks, during which puppies require up to twice the calories per pound of body weight compared to adult dogs.
Feed small-bite kibble designed for brachycephalic toy breeds to ensure ease of grasping and chewing. Weigh your puppy bi-weekly and adjust portions according to their body condition score (BCS) rather than bag recommendations alone.
Shih Tzu Weight & Size Questions
What is the normal adult weight for a Shih Tzu?
The AKC standard weight for an adult Shih Tzu is 9 to 16 lbs, with a height of 9 to 10.5 inches at the withers.
At what age does a Shih Tzu stop growing?
Most Shih Tzus stop growing in height by 8 to 9 months and reach their final adult weight by 10 to 11 months.