Shih Tzu Nutrition & Weight Management: Keeping a Small Dog From Getting Soft

Shih Tzus are small, but their calorie needs are not zero. Overfeeding “just a bit” adds up fast in a breed that’s happy to lie on the couch for most of the day. Extra weight makes breathing, joint issues, and back problems worse—so you can’t afford to ignore the food bowl.

How Much Should a Shih Tzu Weigh?

Most Shih Tzus land somewhere in the 4–7 kg (9–15 lb) range, depending on build. Don’t obsess over the number; focus on body condition:

• You should feel ribs easily under a thin layer of fat.
• There should be a visible waist from above.
• From the side, the belly should tuck up slightly, not hang down.

Choosing a Food That Makes Sense

Ignore buzzwords and look at basics:

• Named animal protein (e.g., chicken, salmon, turkey) as the first ingredient.
• Appropriate size kibble or wet food texture for small mouths.
• Life-stage appropriate (puppy, adult, senior).

The MyPetAtlas Shih Tzu breed page outlines common digestive and allergy issues in the breed; use that as a reference if your dog has recurring stomach or skin problems.

Portion Control: Stop Free-Feeding

Free-feeding a Shih Tzu (“the bowl is always full”) is a great way to produce a round, wheezy dog. Measure meals:

• Twice daily meals are standard for adults.
• Use a measuring cup or scale, not “I guess this is a scoop.”
• If weight creeps up, reduce portions by 10–15% and reassess after a few weeks.

Treats and Human Food

Treats are fine; constant snacks are not.

• Keep treats to under 10% of daily calories.
• Use tiny training treats, not full biscuits for every sit.
• Avoid high-fat table scraps that trigger pancreatitis.

Hydration & Wet Food

Some Shih Tzus drink poorly, especially on dry food. Adding a portion of wet food, warm water, or low-sodium broth can encourage better water intake and help urinary health.

When to Ask for Professional Help

If your dog is overweight and dieting isn’t working, or you’re dealing with repeated vomiting, diarrhea, or itchy skin, it’s time for the vet. Chronic gastrointestinal issues and allergies are common in the breed.

Use MyPetAtlas to find vets with strong small-breed reviews and then bring them the history of what you’ve tried. Combining diet changes with a structured exercise and enrichment plan (see other guides on this site) gives you the best shot at a healthy, lean Shih Tzu for the long haul.