My Pet has a Heart Murmur

What does that mean?

Puppy or Kitten

Soft heart murmurs (grade 1/6 to 2-3/6) can occur in young animals and are of no consequence to them.

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Older, small breed dog

Heart murmurs in these dogs may indicate that these dogs have a leaky mitral valve (the heart valve in between the left atrium and left ventricle).

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Middle-aged to older large breed dog

Heart murmurs in these dogs may indicate that they have a disease called dilated cardiomyopathy (with a subsequent leaky mitral valve).

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Middle-aged to older cat

Heart murmurs in cats can be due to the excitement of the veterinary visit (physiologic heart murmurs) or due to underlying heart disease.

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Pet Heart Murmur