Shih Tzu Dog Food: What Owners Need to Know

With a name that means “little lion,” the Shih Tzu was bred for centuries to be a cherished companion in palaces. Their history is one of devotion, and that heritage gives them their charming, affectionate nature. Today, owners have the tools to return that devotion by understanding their unique nutritional needs.

Here is the good news that most breed guides skip: the primary health challenges facing the Shih Tzu are remarkably responsive to what you put in their bowl. Their breathing, their skin, and their long-term comfort are all areas where smart feeding has a direct, positive impact. An owner who understands this has a real advantage in giving their dog a long and happy life.

This guide gives you that advantage. Every recommendation is backed by published data, and every citation is linked so you can verify it yourself.

Last Verified: May 25, 2026 · 9 minute read · Methodology

TL;DR

Precise calorie management is the most powerful tool for a Shih Tzu’s long-term health.

This breed’s low energy level and small frame mean they thrive on a carefully controlled diet. The National Research Council estimates a typical inactive 12-pound Shih Tzu needs only about 300 kcal per day NRC, 2006. Keeping them lean is the single best way to support their breathing, reduce stress on their joints, and promote overall health.

Beyond calories, their tendency toward skin issues presents another opportunity for nutrition to help. Skin disorders are the most common health concern in the breed, affecting 17.6% of Shih Tzus in a large UK study VetCompass. A diet rich in skin-supportive nutrients like omega-3 fatty acids can make a real difference. At Sniff, we recommend a precisely portioned, calorie-appropriate food that includes these beneficial ingredients. You can see our top-rated foods for the breed in our guide to the best dog food for Shih Tzus.

What makes feeding a Shih Tzu different

The Shih Tzu was bred for a single purpose: companionship. As a member of the Toy Group, their entire history is one of palace life, not fieldwork AKC. This heritage as a beloved lap dog defines their nutritional needs today. They are a low-energy breed in a small package, with an official weight between 9 and 16 pounds.

Their nutritional profile is defined by this low energy requirement. Unlike a terrier bred for constant activity, a Shih Tzu’s daily needs are minimal. This isn’t a problem, it’s a simple fact that empowers owners. A generic “small breed” food can sometimes be too calorie-dense, so measuring each meal is the key to success.

This isn’t about restriction, it’s about accuracy. Their small bodies have small requirements, and respecting that is the foundation of responsible feeding.

The health profile: what you can actually influence

A Shih Tzu’s distinctive looks come with a set of health considerations. Diet is a powerful tool for managing these predispositions, giving you a direct way to support their well-being.

Weight, Breathing, and Heart Health

The Shih Tzu’s brachycephalic (short-nosed) facial structure is a key part of their charm and a primary health consideration. A Cambridge University study found that 45.5% of seemingly healthy Shih Tzus showed clinical signs of Brachycephalic Obstructive Airway Syndrome (BOAS) during exercise tests [Packer et al. 2015 (boas)]. This means many dogs in the breed have an underlying structural challenge with their breathing.

Maintaining a lean body weight is the most effective way to support their airways. Excess weight makes breathing harder for any dog, but especially for a brachycephalic one. It’s also a key factor in supporting heart health. A large study found that heart disease was diagnosed in 12.5% of Shih Tzus, a rate higher than the canine average of 7.1% VetCompass. By managing your dog’s weight and sticking to a clear caloric budget of around 300 kcal per day, you are actively supporting both their breathing and their heart.

Skin Health

Many Shih Tzu owners are familiar with itching and skin irritation. Skin disorders are the most common health issue in the breed, with one study finding 17.6% of all Shih Tzus had at least one skin-related diagnosis VetCompass. These issues are often linked to environmental or food sensitivities.

If a food allergy is suspected, a veterinarian may recommend an elimination diet, which must last a minimum of 8 weeks to be effective. For general skin support, diets rich in omega-3 fatty acids from sources like fish oil can help bolster the skin barrier and promote a healthy coat.

Orthopedic and Eye Issues

For a small dog, the Shih Tzu has a notable rate of joint issues. The Orthopedic Foundation for Animals (OFA) reports a 10.6% prevalence of hip dysplasia based on 1,173 evaluations OFA. Patellar luxation (dislocating kneecaps) is also common, with a 5.3% prevalence across 3,421 evaluations OFA. Keeping a Shih Tzu at a lean body weight is one of the most effective ways to minimize stress on these joints throughout their life.

Their large, prominent eyes are a breed trademark and can be prone to issues like corneal ulceration (4.0% of the breed) and keratoconjunctivitis sicca (KCS or “dry eye,” 3.5%) VetCompass. While diet can’t prevent injury, certain nutrients do support overall eye health.

Puppy years: building a strong foundation

A Shih Tzu puppy’s first year is a window of opportunity. The goal is slow, steady growth to build a strong, resilient frame. Overfeeding a puppy can create lifelong challenges with weight and put unnecessary stress on their developing bones and joints.

Choose a puppy food specifically formulated for small breeds. These formulas have the correct balance of calcium and phosphorus to support healthy skeletal development. Given the breed’s 10.6% rate of hip dysplasia, controlled growth is an important consideration.

There is no need to supplement with extra calcium. A well-formulated puppy food that meets AAFCO nutrient profiles for growth already contains the right amount. Adding more can disrupt this careful balance. The focus should be on feeding the right amount of a high-quality food to keep your puppy lean and athletic.

Adult years

Once a Shih Tzu reaches maturity, the nutritional focus shifts to maintaining that strong foundation. The primary goal is to keep them at a healthy, lean weight. The breed standard calls for a weight of 9 to 16 pounds AKC, and the daily energy need for an inactive 12-pound adult is about 300 kcal NRC, 2006.

This number is your guide.

Use a measuring cup for meals, and be mindful of treats. A single biscuit can represent a significant portion of their daily calorie budget. This careful management isn’t about deprivation, it’s about giving them the freedom of easy movement, clear breathing, and comfortable joints. If skin issues are a concern, this is the time to ensure the diet contains supportive ingredients like fish oil or other sources of omega-3s.

Senior years: supporting them with smart nutrition

With a median lifespan of 12.7 years, a Shih Tzu can be considered a senior around age 8 or 9 VetCompass. The modern approach to feeding senior dogs is focused on preserving their strength and mobility.

As dogs age, they naturally lose muscle mass in a process called sarcopenia. To counter this, senior dogs need more high-quality protein, not less. The old idea of low-protein senior diets is outdated. The NRC recommends a higher protein floor for senior dogs to help them maintain lean body mass. Look for a senior diet with high-quality, easily digestible protein from named animal sources like chicken meal or deboned salmon. Calorie needs may decrease slightly if they become less active, so continue to monitor their body condition closely.

What Sniff recommends and why

For the Shih Tzu, our recommendations prioritize managing their key health risks with a focused dietary strategy.

1. Precise Calorie and Portion Management. This is the cornerstone of a healthy Shih Tzu. Given their low energy needs (~300 kcal/day) and high risk of obesity, every calorie matters. We recommend a food with a moderate fat content and a clear feeding guide, used with a measuring cup.

2. Support for Skin and Coat Health. With 17.6% of the breed affected by skin disorders, diet is a key tool. We recommend foods that contain high levels of omega-3 fatty acids, particularly EPA and DHA from marine sources like fish oil or whole fish.

3. Favor Well-Researched Formulations. Heart disease is a significant health concern for the breed VetCompass. While the Shih Tzu was not a top breed in the FDA’s investigation into diet-associated DCM, we take a precautionary approach. We recommend choosing foods from companies that invest in research and avoiding diets that rely heavily on peas, lentils, and other legumes. You can read more in our guide to DCM.

4. High-Quality, Digestible Protein. Maintaining muscle mass is essential, especially for seniors. We recommend foods that use named animal protein sources as their primary ingredients.

Based on these principles, Sniff has identified a shortlist of the best formulas for the breed. You can find our specific, ranked recommendations on our best dog food for Shih Tzus page.

What we don’t know

While research gives us clear tools to support a Shih Tzu’s health, there are still areas where the science is developing.

• Heart disease is the leading cause of death in the breed, but we do not have dietary intervention studies in Shih Tzus that prove a specific diet can prevent the types of heart disease most common in them. Our recommendations are based on general cardiological best practices, such as weight management.
• We lack specific studies on the ideal dietary protein-to-fat ratio for managing Brachycephalic Obstructive Airway Syndrome (BOAS) beyond the clear benefits of general weight control.
• There are no breed-specific studies demonstrating that particular micronutrients can reduce the high prevalence of KCS (dry eye) or corneal ulcers.

Frequently asked questions

What is the best dog food brand for a Shih Tzu? No single brand is best. We recommend focusing on a specific formula that is calorie-appropriate and contains skin-supportive ingredients. See our full list at best dog food for Shih Tzus.

Is grain-free food safe for my Shih Tzu? We recommend caution. Given that heart disease is a leading health concern in the breed, we believe grain-inclusive formulations from well-researched manufacturers are a prudent choice until the science on diet-associated DCM is more settled. Read our guide to grain-free food and DCM for the full context.

When should I switch my Shih Tzu to a senior food? Around age 8 or 9. Look for a formula with high-quality protein to help preserve muscle mass, rather than the low-protein formulas common in the past. Our methodology details what to look for in a senior diet.

Is a raw diet good for a Shih Tzu? Sniff does not recommend raw diets. They carry risks of bacterial contamination and nutritional imbalances that are difficult to manage. We explain our position in our methodology.

What ingredients should I avoid for my Shih Tzu? Avoid foods with vague ingredient lists and high-calorie fillers. Focus on what’s in the food: a named animal protein source first, and beneficial supplements like fish oil.

How often should I feed my Shih Tzu? Twice a day is best. Splitting their small daily calorie budget into two meals helps manage hunger and maintain stable energy levels.

Does my Shih Tzu need supplements? Not usually, if they are on a complete and balanced diet. A high-quality, AAFCO-compliant food provides all necessary nutrients. An omega-3 supplement like fish oil for skin health is one exception, which should be discussed with your vet.

Related reading

• The Best Dog Food for Shih Tzus
• How to Read a Dog Food Label
• Grain-Free Dog Food and its Link to DCM
• Sniff’s Dog Food Methodology
• Maltese Dog Food Guide

The bigger picture

The Shih Tzu was created to be a source of joy and companionship. For centuries, that has been their gift to the people who love them.

Feeding them well is a simple, powerful way to honor that gift. The research is clear on what helps: precise portions during adulthood, the right balance during puppyhood, and high-quality protein in their senior years. You don’t need a veterinary degree to get this right. You just need the information, and now you have it.

Every measured meal you put in their bowl is a daily investment. It’s supporting easier breathing. It’s building a foundation for comfortable joints. It’s a quiet act of care for the little lion who shares your life.

You know what your Shih Tzu needs. Trust that.

Last Verified: May 25, 2026. This page is informational and does not constitute veterinary advice. If your Shih Tzu has a health condition, consult a veterinarian, ideally one who is board-certified in internal medicine (DACVIM) or nutrition (DACVIM-Nutrition). Read our full methodology and our the Pledge.