A rule of thumb is that 50 % of cavaliers will develop at least a
very mild heart murmur by the age of five or six, and over 90 % will have a murmur by the age of ten.
She takes Enalipril, and Pimobendan for
a mild heart murmur.
But, Sonic was diagnosed with
a mild heart murmur and inflammatory bowel disease.
She continues, «During the appointment, the ER vet noticed
a mild heart murmur while taking his vitals.