Below are the typical symptoms of heartworm disease. However, by the time these symptoms become apparent in your dog, the disease – and damage – may already be extensive.
If your dog exhibits any of the following symptoms, get to your vet as soon as possible for a proper diagnosis and treatment plan.
Initial Symptoms:
- Lethargy and Fatigue
- Coughing
- Weight Loss
- Lack of Appetite
- Intolerance of even regular exercise
Advanced Symptoms (Requiring Surgical Intervention)
- Swollen Belly
- Labored Breathing
- Pale Gums
- Dark Bloody or Coffee-Colored Urine
(Source: HeartwormSociety.org)