Dilated cardiomyopathy is a type of heart failure that affects primarily large breeds.
In dilated cardiomyopathy the chambers of the heart increase in size and the muscles stretch thinner. This condition leads to congestive heart failure.
Read more at 2ndchance.info: Heart Failure In Your Dog
Canine Dilated Cardiomyopathy
Dilated cardiomyopathy (DCM) has long been recognized as a common cause of heart failure in dogs; however, recent changes to treatment and diagnostics have improved the outlook for many dogs
Read more at Dogs In Canada: Dilated cardiomyopathy