Heart disease in general, and congestive heart failure (CHF) in particular, are fairly common diseases in dogs. Chronic valvular disease and dilated cardiomyopathy are the two most common causes of congestive heart failure. Hypertension may be a contributor to heart disease and CHF. The first step toward determining the best nutrient profile to feed your dog with CHF is to work with your veterinarian to determine what, if any, other medical conditions might be present in your dog. For heart failure patients, there are some key nutritional factors to consider. Work with your veterinarian to choose the most appropriate food for your dog.