I agree with Gail about seeing a cardiologist and contacting your breeder. If I am not mistaken, Yorkies are sometimes misdiagnosed with an enlarged heart. I pray this will be the case with your pup.
The faint murmur might be something your pup can grow out of, as with human babies.
Don't give up hope yet. See the specialist for a second opinion.
__________________ Kristin, Max and Teddy  |