Science-based daily calorie needs for your Shih Tzu, calculated from ideal weight range (9-15 lbs / 4-7 kg).
An adult Shih Tzu at ideal weight (4-7 kg / 9-15 lbs) typically requires between 198 and 10 kcal per day, depending on activity level and life stage. This is calculated using the Resting Energy Requirement (RER) formula: 70 × (body weight in kg)0.75, then multiplied by a Daily Energy Requirement (DER) factor that accounts for life stage, activity, and neuter status.
Shih Tzu puppies need significantly more energy for growth — roughly 2.5× their resting energy requirement. Feed a high-quality puppy formula in 3-4 meals per day. Monitor weight weekly to ensure steady, healthy growth without excess.
During adulthood, calorie needs stabilize. A Shih Tzu with moderate activity needs about 1.6× RER for maintenance. Adjust portions based on body condition — most owners overestimate how much their dog needs. Regular weight checks help catch gradual gains early.
Senior Shih Tzu dogs have a lower metabolic rate and need about 1.2× RER. Focus on joint-supporting nutrients, moderate protein, and controlled calories to prevent obesity while maintaining muscle mass. Consider senior-specific formulas.
Shih Tzu are cheerful, outgoing toy dogs with a luxurious flowing coat and a proud, aristocratic carriage. Originally bred as companions for Chinese royalty, they are affectionate lap dogs with surprising spunk. Their brachycephalic (flat-faced) anatomy makes breathing inherently difficult, and any ...
Read full breed health guide →Shih Tzus are brachycephalic (flat-faced), which creates three distinct feeding challenges. First, their short muzzle makes picking up small kibble difficult — they may push food around the bowl rather than eating efficiently. Look for larger, flat-shaped kibble designed for flat-faced breeds. Second, they swallow significant air while eating, leading to gas and digestive discomfort. A slow feeder or elevated bowl can reduce air intake. Third, their shortened airway makes eating in hot or humid conditions particularly stressful.
Shih Tzus gain weight easily and even 2-3 extra pounds is significant on a 10-16 lb frame. Obesity worsens their breathing difficulties exponentially — extra tissue in the throat area further narrows an already-compromised airway. Many owners don't connect their Shih Tzu's worsening snoring and labored breathing to gradual weight gain over months. If your Shih Tzu's breathing seems worse, check their weight first.
Dental disease is extremely common in Shih Tzus due to their small, crowded jaw. By age 5, many have significant tartar buildup and loose teeth. Hard kibble alone doesn't prevent this — regular dental care (brushing, dental chews, professional cleanings) is essential. If your Shih Tzu suddenly starts eating slowly or dropping food, examine their mouth for painful teeth. Senior Shih Tzus may benefit from softened kibble or wet food mixed with dry to make eating comfortable. Also watch for luxating patellas (loose kneecaps) — excess weight worsens this condition, causing pain and reluctance to walk or climb stairs.