My elderly dog has an enlarged heart causing a loud murmur. She is is currently on 3 medications to make her more comfortable. I’ve read in almost every article regarding heart disease in dogs, that coughing is the most common symptom. My dog’s murmur was first detected over a year ago, and I’ve never heard her cough. Not once.
Our vet said that on a scale of 1 to 6 (regarding the severity of the murmur), my dog’s murmur was at a 4.
Also, is heart disease always fatal?