Do shi-zuh puppies that are fit and well survive an enlarged heart we were told she had a heart murmur and larger heart than normaol for a shitzuh however she is full of life eating well?

Answer 1

This question should be addressed to your veterinarian, as the cause of the enlarged heart and heart murmur will determine the survival prognosis. If the heart is enlarged with a murmur as a puppy because she has valvular insufficiency or is in early heart failure, the puppy may die within a few months. However, if the heart is simply on the high side of the average range and the murmur disappears after a few months (sometimes puppies have incidental murmurs), the puppy may live a normal healthy life.