1. **Coughing**: A persistent cough is often one of the first signs of heartworm disease. The cough can be dry or productive and may worsen with exercise.
2. **Fatigue**: Infected dogs may tire easily during exercise or play. They may seem less energetic than usual or reluctant to engage in activities they once enjoyed.
3. **Weight Loss**: As the disease progresses, dogs may experience weight loss due to decreased appetite and overall health decline.
4. **Difficulty Breathing**: As the worms affect the heart and lungs, dogs may show signs of labored breathing or shortness of breath.
5. **Swollen Abdomen**: Advanced heartworm disease can lead to fluid accumulation in the abdomen, causing it to appear swollen.
6. **Fainting or Collapse**: In severe cases, dogs may faint or collapse due to heart failure or lack of oxygen.
7. **Pale Gums**: A dog’s gums may appear pale or bluish, indicating poor blood circulation.
If you notice any of these symptoms in your dog, it is crucial to consult a veterinarian as soon as possible for diagnosis and treatment. Early detection is key to effectively managing heartworm disease.
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