Learn 10 vital signs your Maltese dog may be sick. Spot early symptoms, protect your pup’s health, and know when to call the vet.
The Maltese dog is one of the most charming and affectionate small breeds, adored for its playful personality and loyal nature. While generally healthy, like all dogs, they can occasionally fall ill. The key to keeping your pup safe and happy is recognizing health problems early.
In this guide, we’ll explore 10 vital signs your Maltese dog may be sick, what these symptoms could mean, and when to seek professional veterinary care. By being proactive, you can help ensure your companion lives a long, healthy, and joyful life.

1. Loss of Appetite or Changes in Eating Habits
One of the first signs something may be wrong with your Maltese dog is a sudden change in appetite.
- Skipping meals or refusing food can indicate stomach upset, infections, or even dental problems.
- Excessive eating could signal underlying metabolic disorders or diabetes.
👉 If your Maltese skips more than one meal, it’s a good idea to consult your vet.
2. Unusual Weight Loss or Gain
Weight fluctuations in your Maltese dog can be a red flag.
- Weight loss may point to parasites, digestive issues, or chronic illness.
- Weight gain could be linked to overfeeding, lack of exercise, or thyroid imbalances.
Regular weigh-ins at home can help you track changes before they become serious.
3. Persistent Vomiting or Diarrhea
Occasional stomach upset can be normal, but persistent vomiting or diarrhea in a Maltese dog signals trouble.
- Could be caused by food intolerance, infections, or ingested toxins.
- Dehydration is a major risk, especially in small breeds like the Maltese.
Keep your pup hydrated and seek veterinary advice if symptoms last longer than 24 hours.
4. Lethargy and Fatigue
Is your energetic Maltese dog suddenly uninterested in play or walks? Lethargy may mean:
- Anemia
- Infections
- Heart or respiratory conditions
Because Maltese are naturally playful and lively, noticeable fatigue should not be ignored.

5. Breathing Difficulties or Persistent Coughing
Small dogs like the Maltese dog can sometimes struggle with respiratory issues. Watch for:
- Wheezing or labored breathing
- Constant coughing
- Unusual sounds when breathing
These symptoms may indicate kennel cough, allergies, or more serious conditions such as collapsing trachea.
6. Excessive Scratching, Licking, or Skin Irritation
Healthy skin and coat are a sign of wellness in your Maltese dog. If you notice:
- Redness, rashes, or hot spots
- Constant licking of paws
- Dull or thinning coat
These can be signs of allergies, fleas, or skin infections. Maltese are prone to skin sensitivity, so early treatment is key.
7. Changes in Bathroom Habits
A sudden shift in your Maltese dog’s urination or bowel movements can indicate illness.
- Frequent urination may suggest diabetes or urinary tract infections.
- Straining could signal constipation, stones, or blockages.
- Blood in urine or stool should always be treated as urgent.

8. Bad Breath or Dental Issues
Dental disease is unfortunately common in the Maltese dog breed. Warning signs include:
- Persistent bad breath
- Difficulty chewing
- Drooling or pawing at the mouth
Untreated dental problems can lead to infection and organ damage. Regular dental cleanings are essential.
9. Behavioral Changes
If your usually sweet Maltese dog becomes irritable, aggressive, or withdrawn, it could be due to pain or illness.
Behavioral shifts may stem from:
- Chronic pain (like arthritis)
- Neurological problems
- Anxiety triggered by discomfort
Never dismiss sudden behavioral changes.
10. Eye and Nose Discharge
Maltese dogs are prone to tear staining, but excessive eye discharge or nasal mucus may be a sign of illness.
- Clear discharge might suggest allergies.
- Thick yellow or green discharge could signal infection.
Because the Maltese dog has sensitive eyes, consistent care and monitoring are important.

When to See a Veterinarian
If your Maltese dog exhibits any of these signs persistently, schedule a vet visit right away. Early intervention can save your dog from discomfort and prevent serious illness.
Preventative Care for Maltese Dogs
To keep your pup thriving, here are some preventive steps:
- Maintain regular vet checkups
- Follow a balanced diet
- Brush their teeth often
- Groom their coat to avoid skin issues
- Provide daily exercise
For additional guidance on small breed wellness, you can check resources like American Kennel Club, PetMD, and ASPCA.
Conclusion
Your Maltese dog depends on you to notice subtle changes in behavior, appetite, or energy. By being attentive to the 10 vital signs of illness, you can ensure your pup stays healthy and happy for years to come.
Remember, when in doubt, always consult a trusted veterinarian. Proactive care is the best way to protect your beloved Maltese.