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Exercise intolerance (tires easily) and Lethargy / sleeping more in dogs: what to do

When these two symptoms appear together, the likely problem space narrows sharply — 1 common conditions are strongly linked. Ranked by match, with urgency and home care.

Possible common causes

✅ Home-care checklist

  • ✓Blood-test before starting prevention
  • ✓Avoid strenuous exercise
  • ✓Get a heartworm test at the vet

🏥 When to see a vet

  • ⚠Chronic dry cough + exercise intolerance
  • ⚠Unprotected dog in a mosquito-active region

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