Can Intestinal Worms Cause A Heart Murmur In Dogs?

Can Intestinal Worms Cause A Heart Murmur In Dogs? Other causes of an acquired heart murmur in older dogs include bacterial endocarditis, caused by a bacterial infection that localizes on a heart valve and dilated cardiomyopathy (see the handouts ‘Endocarditis in Dogs’ and ‘Dilated Cardiomyopathy in Dogs’). What can cause a heart murmur in dogs?