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My active dog has a heart murmur but no symptoms. Is it normal?

Updated On September 23rd, 2025

Pet's info: Dog | English Springer Spaniel | Female | spayed

Took my 8 year old Springer to vet yesterday for booster and health check.Lady vet said she had a heart murmur. She is full of life, no cough, not breathless,hungry, loves play and going for a run. This same vet wrongly diagnosed my other dog for something else, so I am concerned about this. My dog has no symptoms at all. Is this normal please?

1 Answer

Most Helpful Answer

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Answered By Anna M., DVM

Veterinarian

Published on May 1st, 2019

Hello, and thanks for your question. If you're not comfortable with the input the vet gave you, then I recommend seeking a second opinion. However, a heart murmur does not necessarily suggest symptomatic congestive heart failure. Many dogs live normal, active lives with heart murmurs for years - and that murmur may never cause Immy any problems. But, if present, it's important to note a murmur, and know the signs to watch for. So, yes, in short I would say it's very common and "normal" to find a murmur in an otherwise healthy dog. The best second opinion you could seek, to better evaluate what's going on with Immy's heart, would be from a cardiologist who could perform an echocardiogram of the heart - if you wanted a "final answer" of sorts. hope this helps!

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