Heart disease can be a silent killer of cats just as it is in people.  Cats can be without any apparent signs of problems and then die suddenly from a condition called cardiomyopathy.  Cardiomyopathy is disease of the heart muscle. If the heart muscle stops contracting properly, it can result in death. Cardiomyopathy occurs in purebred and mixed breed cats, and signs include heart murmur, coughing, exercise intolerance, restlessness, abnormal [...]