Slower, smaller meals in a companion breed
A senior Shih Tzu was bred to be close company, and its senior appetite changes are usually gentle and gradual. Meals take longer, the dog may pause midway and return, and total intake often shrinks a little as activity settles into short garden outings and long hours near its people. A senior Shih Tzu who still enjoys food but in smaller, slower sittings is showing a very typical pattern for the breed and age.
Weight can nonetheless rise in a senior Shih Tzu, because the treat economy of a beloved lapdog does not shrink when meals do. Biscuits for visitors, tidbits during television evenings, and a taste of every family snack add a hidden second diet to a very small body, and the gain shows as a rounder belly, a coat that parts over fat instead of muscle, and heavier breathing after minimal effort.
Teeth and breathing at the Shih Tzu bowl
Teeth shape appetite strongly in a senior Shih Tzu, whose short jaw crowds them closely. A dog who licks gravy and leaves pieces, chews on one side, or eats wet food eagerly while ignoring dry food is often describing mouth discomfort in the only way available. Pawing at the muzzle, new bad breath, or food dropped around the bowl strengthen the case for a dental examination rather than another brand of kibble.
Breathing matters at the bowl for a senior Shih Tzu as well. A flat-faced dog may eat in bursts, resting between mouthfuls, and prefer smaller meals spread across the day. Serving measured food little and often, in a shallow bowl on a calm floor spot, respects that rhythm and lets you see exactly how much of each serving was finished.
Weighing a dog whose coat can be a costume
Weighing a senior Shih Tzu monthly cuts through every illusion its coat creates. A freshly groomed dog can look pounds lighter overnight, and a grown-out coat can fake gain just as convincingly, so hands and scales must decide: ribs felt under a thin layer, a waist that exists when the coat is pressed down, and a recorded weight compared with last month's.
Muscle softens in a senior Shih Tzu as well, particularly over the back legs that once bounced it onto sofas. A stable weight with a flabbier feel and less jumping is still a change in composition, and gentle, frequent short outings protect the muscle that remains better than one heroic weekly walk.
Shih Tzu appetite warnings to act on
A senior Shih Tzu who refuses food for a day, vomits repeatedly, or stops eating alongside laboured breathing, heavy drooling, or marked sleepiness should see a veterinarian promptly. Small, flat-faced seniors have less margin in both directions: missed meals matter sooner, and breathing effort after eating is information, not a quirk to accommodate indefinitely without a check.
Steady weight loss in a senior Shih Tzu despite a willing appetite, or a new habit of drinking much more and asking out at night, also belongs in a vet appointment with your notes attached. Bring amounts fed, treats given, and the dates the changes began, so the clinic starts from facts rather than impressions of a dog who has always been small and hard to judge.
Little dog, written-down numbers
Written numbers suit a senior Shih Tzu because memory is unreliable about a dog whose size barely changes to the eye. Keep one page: monthly weight, what is fed and how much is left, treats counted for a sample week, and any chewing or breathing observations at meals.
That Shih Tzu page stays complete and portable when KinsLe keeps it in Pet Passport, alongside dental notes and senior visit summaries for the same small dog.