Shih Tzu Aging Guide: What to Expect as They Grow Older

Shih Tzus are affectionate, long-lived companion dogs, but their [brachycephalic](https://seniorpet.org/knowledge/persian-cat-brachycephalic-airway "Brachycephalic Syndrome Guide") skull and small size shape a unique set of age-related health issues. A [Shih Tzu](https://seniorpet.org/knowledge/breed/shih-tzu "Senior Shih Tzu Health Guide") is considered "senior" around 9–10 years of age (typical lifespan 10–16 years). As your Shih Tzu moves into its golden years, you’ll want a targeted plan for prevention, early detection, and day-to-day management of conditions that are common in the breed: eye disease (including proptosis, keratoconjunctivitis sicca, and progressive retinal atrophy), periodontal disease, [chronic kidney disease](https://seniorpet.org/knowledge/siamese-cat-kidney-disease "Chronic Kidney Disease Management"), brachycephalic airway syndrome (BAS), and intervertebral disc disease (IVDD).

This guide is breed-specific and veterinary evidence–based, with practical steps you can do at home and items to discuss with your veterinarian.

How Shih Tzu aging differs from other breeds

• Small size tends to increase the prevalence of periodontal disease and IVDD compared with large breeds.
• Brachycephaly (short skull) gives Shih Tzus shallow eye sockets and narrow airways—this increases risk of corneal injury, proptosis (eye luxation), and respiratory compromise.
• Their lifespan (10–16 years) means multiple geriatric transitions; age-related kidney and ocular diseases become more likely after 9–10 years.

Veterinary studies have shown that facial conformation (brachycephaly) correlates with higher rates of corneal disease and airway problems, emphasizing the need for breed-specific care in older dogs (e.g., Packer et al., PLOS ONE).

What to expect between 9–10 years

Common early senior signs:

• Slower recovery after walks, reluctance to jump
• More frequent coughing, snoring, or noisy breathing
• Cloudy eyes, tearing, or squinting
• Foul breath, drooling, or difficulty chewing
• Reduced appetite or subtle weight loss

If you notice sudden changes—especially collapse, severe breathing difficulty, sudden vision loss, or inability to walk—seek emergency veterinary care.

Major age-related conditions in senior Shih Tzus

The table below summarizes each key condition, typical signs, diagnostic tests, and practical interventions.

| Condition | Typical signs in a senior Shih Tzu | Diagnostic tests your vet will use | Practical owner-level interventions | |---|---:|---|---| | Eye injuries & proptosis | Bulging eye after trauma, sudden inability to close eye, pain | Ophthalmic exam, fluorescein stain, topical and systemic analgesia, possible surgical repositioning | Keep face hair trimmed, avoid rough play, emergency cover and immediate vet visit if proptosis suspected | | Dry eye (KCS) | Thick mucous discharge, red conjunctiva, squinting, corneal pigment | Schirmer tear test, fluorescein stain, corneal exam | Artificial tears 2–6×/day, prescribed cyclosporine or tacrolimus, clean eyelids daily | | [Progressive retinal atrophy](https://seniorpet.org/knowledge/siamese-cat-progressive-retinal-atrophy "Progressive Retinal Atrophy Guide") (PRA) | Night vision loss progressing to daytime blindness | Ophthalmic exam, electroretinography (ERG), genetic testing if available | Environmental modifications, non-slip surfaces, refrain from painful ocular meds (no cure) | | Periodontal disease | Bad breath, plaque/tartar, loose teeth, dropping food | Oral exam, dental radiographs under anesthesia | Daily brushing, veterinary dental clean + extractions as needed, dental diets/chews carefully | | Chronic kidney disease (CKD) | Increased drinking/urination, poor appetite, weight loss | CBC/Chem/SDMA/urinalysis, blood pressure, ultrasound | Early detection (SDMA), prescription renal diet, hydration, phosphate control, meds as needed | | Brachycephalic airway syndrome (BAS) | Snoring, noisy breathing, exercise intolerance, cyanosis | Airway exam under light sedation, laryngoscopy, CT in complex cases | Weight control, cool environment, surgical correction for stenotic nares/elongated palate if indicated | | Intervertebral disc disease (IVDD) | Pain when picked up, reluctance to jump, hind limb weakness or paralysis | Neuro exam, spinal radiographs, CT/MRI | Restrict stairs/jumping, short leash walks, weight control; emergency surgery for severe deficits |

(References: Packer et al., PLOS ONE; IRIS CKD guidelines; veterinary ophthalmology texts and specialty recommendations.)

Eye conditions: specifics for Shih Tzu

Shih Tzus have prominent eyes and shallow orbits. Consequences:

• Proptosis (eye luxation): More likely after facial trauma or a tug on a collar. Proptosis is an emergency—delay increases risk of irreversible vision loss. If you suspect proptosis, keep the eye moist (saline-soaked gauze), avoid pressure, and get to an emergency clinic; surgical replacement is often possible if done promptly.
• Keratoconjunctivitis sicca (KCS, dry eye): Brachycephalic facial conformation plus immune-mediated disease predisposes Shih Tzus. Diagnosis is via Schirmer tear test. Long-term topical immunomodulators (0.2% cyclosporine or tacrolimus) are effective; many dogs need lifelong therapy (Niemiec, veterinary ophthalmology).
• Progressive retinal atrophy (PRA): PRA has been reported in Shih Tzus in genetic and ophthalmology databases. PRA causes progressive vision loss; there is no cure, but diagnosis (ERG/genetic test) helps with management and breeding decisions. Environmental adaptations and safety planning improve [quality of life](https://seniorpet.org/knowledge/siamese-cat-quality-of-life "Quality of Life Assessment").

Practical eye-care steps:

• Trim hair around the eyes to prevent irritation and reduce tear staining.
• Clean eyelids and face folds daily with saline and dry thoroughly to prevent infection.
• Keep a lubricating eye drop on hand and learn application techniques from your vet.
• If your dog develops sudden swelling, bleeding, or an obviously displaced eye, go to ER.

Dental care — a top priority

Small-breed dogs, including Shih Tzus, have crowded teeth and a high prevalence of periodontal disease. Untreated periodontal disease can lead to pain, tooth loss, and systemic organ effects (heart, kidney, liver).

Actionable dental plan:

• Home: Brush daily (2–3 minutes) with a canine fluoridated toothpaste and soft toothbrush; introduction should be gradual and positive.
• Veterinary: Annual oral exams; dental radiographs under anesthesia to detect root disease; professional cleaning every 6–24 months depending on disease severity.
• Diet & chews: Use vet-approved dental diets/chews that reduce calculus, but avoid large hard chews that could fracture teeth.
• If [dental disease](https://seniorpet.org/knowledge/siamese-cat-dental-disease "Dental Disease in Senior Pets") is present: expect extractions and periodontal therapy. Discuss anesthesia risk due to brachycephaly and kidney disease—pre-anesthetic testing and tailored anesthesia protocols are essential.

Kidney disease (CKD)

CKD probability increases with age. Shih Tzus may present with subtle signs: decreased appetite, weight loss, increased thirst/urination, and occasional vomiting.

Key management points:

• Early detection: Include SDMA (symmetric dimethylarginine) and creatinine in senior bloodwork—SDMA can detect decreased renal function earlier than creatinine alone (hallmarks in veterinary nephrology).
• Baseline and routine monitoring: CMP, SDMA, urinalysis (including urine protein:creatinine ratio), blood pressure (hypertension worsens kidney disease).
• Dietary management: Prescription renal diets lower phosphorus and protein quality; these slow progression and improve clinical signs.
• Hydration: Encourage water intake—wet food, pet fountains, or subcutaneous fluids in advanced cases.
• Medication: Treat hypertension, hyperphosphatemia, and urinary tract infections per IRIS guidelines.

Discuss with your vet the staging of CKD and tailored interventions (IRIS CKD staging is standard in clinical practice).

Brachycephalic airway syndrome (BAS)

Shih Tzus often show one or more components of BAS: stenotic nares (narrow nostrils), elongated soft palate, everted laryngeal saccules, and narrow trachea. BAS can worsen with age due to [obesity](https://seniorpet.org/knowledge/golden-retriever-weight-management-obesity "Weight Management for Senior Pets"), dental disease, and decreased physiologic reserve.

What you can do:

• Weight management: Even small amounts of excess weight significantly increase breathing effort.
• Environmental control: Keep your Shih Tzu cool and avoid overexertion in warm weather.
• Avoid neck-only collars for walks if breathing is noisy—use a well-fitted harness that does not restrict the chest.
• Surgical options: If hindering quality of life, surgical correction (rhinoplasty, staphylectomy, removal of everted saccules) can markedly improve breathing. Discuss anesthetic risk and airway management with a surgeon experienced in brachycephalic dogs.
• Anesthesia planning: Always provide your vet with the information that you have a brachycephalic senior dog—pre-op bloodwork, careful induction and extubation, and postoperative monitoring in oxygenated environments reduce risk.

Studies link severity of facial conformation to corneal and airway disease, so proactive management matters (Packer et al.).

Intervertebral disc disease (IVDD)

Small breeds are predisposed to IVDD, especially if genetic chondroid degeneration is present. In seniors, degeneration is often advanced.

Signs to watch for:

• Reluctance to jump or climb stairs
• Shifting leg lameness, yelping at pick-up, hunched posture
• Hind limb weakness, “knuckling” paws, or paralysis

Management:

• Preventive: Limit jumping (use ramps/stairs), provide non-slip surfaces, maintain lean body condition.
• Medical: Strict activity restriction, anti-inflammatory drugs, and pain control for mild cases.
• Surgical: If neurological deficits progress or paralysis occurs, decompressive surgery (e.g., hemilaminectomy) within 24–48 hours improves outcomes.
• Rehabilitation: Physical therapy, hydrotherapy, and home exercises can aid recovery.

Prompt recognition is key—don’t delay vet evaluation if your Shih Tzu shows neurologic signs.

Daily care checklist for senior Shih Tzus (actionable)

• Schedule semiannual or annual senior wellness exams starting at 9 years, including:

- CBC, chemistry panel, SDMA, urinalysis - Blood pressure measurement - Dental evaluation (including dental radiographs when indicated) - Ophthalmic screening for tear production and retinal function if vision changes occur

• Daily:

- Brush teeth (aim for daily; >3×/week is beneficial) - Inspect eyes for redness, discharge, or squinting; clean face folds once daily - Monitor breathing—count respirations at rest if concerned (>30 breaths/min at rest is abnormal) - Encourage gentle, low-impact exercise (short walks, indoor play)

• Household changes:

- Provide ramps or pet stairs to reduce jumping - Non-slip flooring or rugs to protect joints and make navigation easier for vision-impaired dogs - Consistent furniture placement if vision loss occurs

• Weight management:

- Aim for ideal body condition; even small weight gains can worsen breathing and joint stress - Use measured meals and consider a senior or renal-appropriate diet as advised by your vet

• Emergency preparedness:

- Keep saline eye wash and a soft muzzle/harness for transport - Know nearest 24-hour veterinary hospital

Veterinary care: what to expect at the clinic

When you bring in a senior Shih Tzu, a comprehensive approach is best:

• Baseline diagnostics: CBC, biochemistry panel including renal values, SDMA, urinalysis, urine culture if indicated, and blood pressure.
• Dental evaluation under anesthesia with full-mouth radiographs when needed.
• Ophthalmic evaluation (Schirmer tear test, fluorescein stain) if ocular signs exist.
• For breathing problems: ENT/airway exam with possible videoendoscopy; discuss surgical options if quality of life is affected.
• Neurologic signs: referral to a neurologist for advanced imaging (CT/MRI) if IVDD is suspected.

Make a plan with your vet for frequency of rechecks—many owners transition to twice-yearly senior exams.

Medication and anesthesia considerations

• Many older Shih Tzus require anesthesia for dental work or surgery. Pre-anesthetic testing (bloodwork, ECG if cardiac disease suspected), careful airway management, and postoperative oxygen are necessary.
• Topical ophthalmic medications (e.g., cyclosporine, tacrolimus) require consistent application—set a schedule and track doses.
• Avoid over-the-counter eye drops without vet approval—some contain preservatives that irritate corneas.

End-of-life planning and quality-of-life metrics

Shih Tzus can remain vibrant into their teens. Use quality-of-life scales (mobility, appetite, pain, breathing comfort, enjoyment of daily activities) to guide decisions. Discuss palliative options, pain control, and hospice care with your veterinarian when chronic disease progresses.

Evidence and resources (select)

• Packer, R.M.A., Hendricks, A., & Burn, C.C. Studies correlating brachycephaly with ocular and airway disease (PLOS ONE and related veterinary literature).
• International Renal Interest Society (IRIS) guidelines for staging and treating chronic kidney disease.
• Veterinary ophthalmology textbooks and peer-reviewed articles on KCS, proptosis, and PRA.
• Veterinary dental literature on periodontal disease prevalence and anesthesia-based dentistry.

Ask your veterinarian for citations for any specific study or guideline they reference; reputable clinics will provide or summarize primary literature.

When to call your veterinarian or seek emergency care

Call your vet or emergency clinic immediately if your Shih Tzu develops:

• Sudden breathing difficulty, collapse, or blue/gray gums
• Sudden loss of vision or a bulging/displaced eye
• New paralysis, inability to stand, or severe back/neck pain
• Severe vomiting/diarrhea with lethargy and dehydration

Final thoughts

Senior Shih Tzus benefit from breed-specific, proactive care. Regular veterinary screening, meticulous dental and eye care, weight control, and environmental adjustments greatly increase the chances of a comfortable, active later life. Many age-associated conditions are manageable or treatable when detected early—your close observation and timely veterinary care make a substantial difference.

Talk with your veterinarian about a personalized senior plan that includes a schedule for screening tests, oral care, ophthalmic checks, and strategies to reduce airway and spinal risk. With a thoughtful approach, your Shih Tzu can enjoy high quality of life well into its senior years.