Heartworm disease is a serious and potentially fatal condition caused by parasitic worms living in the arteries of the lungs and in the right side of the heart. Dogs are more commonly affected by heart worm disease but cats and other mammals can also become infected.

Symptoms may include –

Loss of appetite

Lethargy

Coughing

Weakness

Hemmorhage

Recently infected dogs may exhibit no signs of the disease, while heavily infected dogs may eventually show clinical signs, including:

A mild, persistent cough

Reluctance to move or exercise

Fatigue after only moderate exercise

Reduced appetite and weight loss