This paper describes the correction of a patent ductus arteriosus in a four month-old, intact female cock-a-poo dog. The dog was in congestive heart failure at initial presentation and was sent home on medications to resolve her pulmonary edema prior to PDA correction. One month later, the dog was brought back for coil embolization of her PDA. Under general anesthesia, aortic angiography was performed to assess the size and shape of the ductus. Coil embolization of the ductus was attempted. However, occlusion of the ductus was not achieved due to coil dislodgement. Embolization of both main pulmonary arteries occurred. The dog was recovered from anesthesia and surgical ligation of the ductus was performed two days later. Although trivial flow through the ductus remains, the dog's heart is reduced in size and no pulmonary edema is noted. Although coil embolization is not without complications, they are not usually life threatening. Coil embolization remains a viable alternative to surgical ligation for treatment of patent ductus arteriosus in most affected dogs.