Maltese Health Risks — What Every Owner Should Know
Maltese health risks matter because these compact toy dogs accumulate several well-documented predispositions despite their generally long-lived profile. Veterinary literature repeatedly flags myxomatous mitral valve disease, tracheal collapse, and congenital hydrocephalus when discussing Maltese and related small breeds. None of these conditions affect every individual, yet they outline the organ systems deserving consistent attention from puppyhood through senior years. Maltese health problems, Maltese common diseases named in those reviews, and care across Maltese lifespan are summarised below. All statements on this page are DVM-reviewed and tied to published studies or specialty reviews cited below.
Most Common Health Conditions in Maltese
Mitral Valve Disease (MMVD)
Myxomatous mitral valve disease remains the dominant acquired cardiac concern in small dogs once they reach middle age. Serres and colleagues’ retrospective review of 942 small dogs documents left apical systolic murmurs and heart-failure presentations with Maltese clearly listed among predisposed breeds, while Borgarelli and Buchanan’s review reinforces size-specific mitral degeneration patterns. Murmur detection often shifts clinical focus after roughly six years of age, so careful auscultation during routine visits becomes increasingly informative as Maltese mature.
Tracheal Collapse
Tracheal collapse produces dynamic airway narrowing that shows up as honking cough, exercise intolerance exaggerated by collar pressure, syncope-like episodes during excitement, or harsh inspiratory noise. A 2022–2024 retrospective review of 110 small-breed dogs reports Maltese as the single most commonly affected breed—34 cases (30.9%)—with a mean documented diagnosis age near 11.4 years. That disproportion underscores why even classic “dainty lapdog” temperament should not delay imaging or fluoroscopic assessment when airway signs escalate.
Hydrocephalus
Congenital hydrocephalus—an imbalance between cerebrospinal fluid production and absorption—clusters within toy breeds, and veterinary reviews cite Maltese among the breeds most frequently flagged in clinical discussions alongside brachycephalic and miniature companions. Structural changes can alter skull contours or gaze direction while neurologic fallout may include episodic stumbling, behavioural drift, poor task retention, or seizures during the first year. Early neuroimaging when suspicion arises helps differentiate reversible mimics from progressive disease.
Health Risks by Age for Maltese
Based on peer-reviewed case series and specialty reviews referenced on this page.
| Age Range | Conditions to Watch | Why This Age Matters | Vet Action Recommended |
|---|---|---|---|
| 0–1 years | Congenital hydrocephalus | Congenital disease is present at birth even when overt neurologic signs lag weeks to months | Neurologic assessment and advanced imaging when dome skull, abnormal gaze, seizures, or coordination loss appear |
| 1–5 years | Baseline wellness, early awareness of airway irritability | Most MMVD murmurs and tracheal collapse diagnoses cluster later, but collar-related cough can appear earlier in susceptible dogs | Annual exams with discussion of leash pressure, excitement triggers, and any new cough pattern |
| 6–13 years | Mitral valve degeneration, active tracheal collapse window | Literature notes Maltese predisposition with murmurs often noted after midlife and collapsing airway cohorts centred near 11 years | Structured cardiac exams; thoracic imaging or fluoroscopy if classic honking or cyanotic spells emerge |
| 13+ years | Advanced valvular regurgitation, chronic airway narrowing | Senior toy dogs tolerate hemodynamic stress poorly when both heart and airway disease overlap | Twice-yearly seniors visits with multimodal symptom tracking and tailored activity plans |
Symptoms to Watch For
Contact your veterinarian promptly if you notice any of the following signs in your Maltese.
- Resting cough worsening overnight, intolerance to collars, or bluish gums during excitement that may indicate tracheal collapse.
- Soft left-sided murmur escalation, tachypnoea after mild exertion, or abdominal fluid distension suggesting mitral valve disease progression.
- Dome-shaped skull, staring-down eye position, circling or seizures reflective of possible hydrocephalus.
Maltese Breed Profile
- Breed group: Toy
- Life span: 12 – 15 years
- Weight: 2 – 4 kg (4 – 8 lbs)
- Height: 20 – 25 cm (8 – 10 in)
- Temperament: Gentle, Playful, Affectionate, Fearless
- Bred for: Companion
- Origin: Mediterranean Basin
Research Sources
All health data on this page is drawn from peer-reviewed veterinary studies and specialty reviews.
- Serres et al. 2009 — Retrospective study of 942 small-sized dogs — heart murmur prevalence; Borgarelli & Buchanan 2012 — Myxomatous mitral valve disease in dogs
- PMC11349713 — Retrospective study of tracheal collapse in small-breed dogs: 110 cases 2022-2024
- PMC7123269 — Biel et al. 2013 — Hydrocephalus in Animals — congenital hydrocephalus in toy breeds
Frequently Asked Questions
Are Maltese dogs at risk for mitral valve disease?
Small-breed literature lists Maltese among dogs at increased risk for myxomatous mitral valve disease, and first murmurs are often detected after about six years of age. Discuss your dog's individual risk with your veterinarian.
Why is tracheal collapse a concern in Maltese?
Recent small-breed case series identify Maltese as the most frequently represented breed, so honking cough, exercise intolerance linked to airway noise, or cyanotic spells justify prompt airway evaluation rather than delaying care. Discuss your dog's individual risk with your veterinarian.
What signs suggest congenital hydrocephalus in Maltese puppies?
Toy-breed congenital hydrocephalus is present from birth but signs unfold in early life—look for dome-shaped cranium, a downward-shifted gaze, circling or poor coordination, seizures, or regressions in learning compared with litter expectations. Discuss your dog's individual risk with your veterinarian.
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