Dogs of any age and breed can develop congestive heart failure, although giant dog breeds are predisposed to developing congestive heart failure through cardiomyopathy. Dogs pre-disposed to congestive heart failure include giant dog breeds, such as Bloodhounds, Great Danes, Mastiffs, and Rottweilers, and older small breed dogs whose bodies are prone to more stress due to their small size.

Heart failure is caused by an abnormality in the function or structure of the heart. This condition makes the heart unable to pump normal amounts of blood to the body’s tissues. Heart failure can also lead to the retention of fluid in the lungs and body cavities, which in turn leads to congestive heart failure. The following conditions, among others, can cause dog heart failure: cardiomyopathy or heart muscle disease, arrhythmia or irregular electrical rhythms of the heart, and heartworm disease.

If your dog is at risk of heart disease you should watch for the following signs: shortness of breath, coughing, and difficulty breathing, weight loss, and fatigue. If you suspect that your dog is suffering from congenital heart disease have them checked thoroughly by your vet.

Your vet will conduct a general examination of your dog, and may also require several diagnostic tests, such as chest x-ray, ultrasound examination of the heart, or an electrocardiogram. Depending on the veterinarian’s assessment of your dog’s condition and the cause of their heart failure treatment could range from diuretic drugs to hospitalization.
Generally heart failure cannot be prevented, but with early diagnosis and proper care the underlying causes of congestive heart failure can be managed. If you believe your pet is at risk for congestive heart failure speak with your veterinarian about what you can do to reduce the risk for your pet.