Heartworm disease is a serious and potentially fatal condition in dogs. Fortunately, knowing the signs and symptoms can help dog owners get their pets to the care of a veterinarian before it’s too late. When an animal is infected with heartworms — which can measure up to one foot long and live in the lungs — heart failure, lung disease, and organ failure become major concerns for pet owners. To prevent long-term problems for your dog, look out for some of the key symptoms of the disease.

Veterinarian Explains the Common Signs of Heartworms in Dogs

Lethargy & Weight Loss

At first, symptoms may go unnoticed in dogs. But as the disease begins to progress, the animals may develop a persistent cough, followed by fatigue and a reluctance to engage in physical activity. This is often accompanied by a decreased appetite and weight loss.

Swollen Belly

As a result of the weight loss, the dog’s chest and stomach may bulge out. As the infection grows, excess fluid in the abdomen — which builds up as a response to the heartworms — also causes this symptom.

Labored Breathing

Dogs that host a large number of heartworms — some may carry hundreds — can also develop a sudden blockage of blood flow, leading to a dangerous cardiovascular collapse. Experts at the American Heartworm Society call this condition “caval syndrome,” and it is marked by a sudden onset of labored breathing, pale gums, and dark urine.

In general, the best way to know if your dog has heartworms is to get it tested. This screening can be done during a routine visit to the veterinarian. The team at Covedale Pet Hospital in Cincinnati, OH, offers heartworm testing for dogs, as well as services such as surgical and therapy laser treatments. To learn more about the pet care available, call (513) 251-4666 or visit their website.