Dogs don't experience heart attacks the way humans do, but this doesn't mean they don't die of heart disease. Heart failure is increasingly common in America's dogs, with many showing symptoms by age seven or eight. Even some young dogs develop congestive heart failure, inheriting the propensity for the disease from their parents. Conventional medical practitioners consider congestive heart failure and other circulatory problems to be progressive and irreversible, but holistic veterinarians know that in many cases, heart disease can be slowed, reversed, and even cured. Understanding heart disease will help you prevent it in healthy dogs and treat it in dogs who are already ill.