Keeping your Shih Tzu at a healthy weight is essential for their long-term health. Maintaining an ideal weight reduces the risk of joint problems, heart disease, and obesity-related issues. This guide provides a Shih Tzu weight chart by age and tips for monitoring their growth.
Average Shih Tzu Weight by Age
| Age | Weight (lbs) | Weight (kg) | Notes |
|---|---|---|---|
| 8 weeks | 2–3 lbs | 0.9–1.4 kg | Typical puppy weight after weaning |
| 12 weeks | 3–4 lbs | 1.4–1.8 kg | Rapid growth stage |
| 16 weeks | 4–5 lbs | 1.8–2.3 kg | Active and playful growth |
| 6 months | 5–7 lbs | 2.3–3.2 kg | Half adult size reached |
| 9 months | 7–8 lbs | 3.2–3.6 kg | Approaching adult weight |
| 12 months | 8–12 lbs | 3.6–5.4 kg | Full adult weight range |
| 2 years+ | 9–16 lbs | 4–7.3 kg | Standard adult Shih Tzu weight |
⚠️ Weight can vary depending on gender, genetics, and activity level. Male Shih Tzus are usually slightly larger than females.
Tips to Maintain Ideal Weight
-
Measure food portions carefully – Use a measuring cup and follow dog food guidelines.
-
Feed multiple small meals – 2 meals/day for adults, 3–4 for puppies.
-
Exercise regularly – Short walks and playtime keep them active.
-
Monitor body condition – Ribs should be palpable but not visible; a waistline should be seen from above.
-
Avoid overfeeding treats – Treats should be no more than 5–10% of daily calories.
Signs Your Shih Tzu is Overweight
-
Difficulty walking or jumping
-
Fat covering the ribs and abdomen
-
Lethargy or shortness of breath after mild activity
Signs Your Shih Tzu is Underweight
-
Ribs and spine are easily visible
-
Lack of energy or poor coat condition
-
Frequent hunger despite proper feeding
Frequently Asked Questions
What is the ideal adult weight for a Shih Tzu?
Most adult Shih Tzus weigh between 9–16 lbs (4–7 kg) depending on gender, genetics, and size.
How fast do Shih Tzu puppies grow?
Puppies grow rapidly in the first 6 months, reaching half their adult weight by 6 months. Growth slows after 9–12 months.
How can I tell if my Shih Tzu is overweight?
You should be able to feel the ribs without pressing too hard, see a defined waistline, and observe a tuck-up of the abdomen.
Can Shih Tzus gain weight easily?
Yes, Shih Tzus are prone to weight gain, so monitor food intake and provide regular exercise.
Conclusion
Monitoring your Shih Tzu’s weight from puppyhood through adulthood is crucial for long-term health and happiness. Using a Shih Tzu weight chart by age, combined with portion control, proper nutrition, and daily activity, helps maintain an ideal body condition. A healthy Shih Tzu is a happy Shih Tzu!