Patent ductus arteriosus (PDA) is the most common heart defect found in dogs.

It affects about 1 out of every 150 puppies.

The disorder is more common in female dogs than in males.

The disease is usually genetic, meaning it is passed on from one generation to the next. Affected dogs should not be bred because of the risk of passing the condition on to their puppies.

Some breeds that are at a higher risk include the Bichon Frise, Chihuahua, Cocker spaniel, Collie, English Springer spaniel, German shepherd, Irish setter, Keeshond, Kerry blue terrier, Maltese, miniature and toy Poodle, Pomeranian, Sheltie, and Yorkshire terrier.

Learn more about the structure of the heart