Pet Heart Murmur Symptom Guide | Observation Points and When to Seek Care
Understand possible causes of Heart Murmur and key points for home observation
A heart murmur is an abnormal heart sound heard during auscultation and may reflect turbulent blood flow or structural heart abnormalities. Record when it was found and how it changes, and arrange further veterinary evaluation.
What this symptom means clinically
A heart murmur is an abnormal sound produced by turbulent blood flow in or near the heart chambers or valves. On auscultation, it may be classified as systolic or diastolic. This type of abnormal sound usually reflects structural cardiac changes, such as valvular insufficiency or septal defects, or functional hemodynamic changes. Cardiac auscultation can provide an initial indication of the location and timing of abnormal blood flow.
🐱 In cats
In cats, heart murmurs are often associated with myocardial disease, such as hypertrophic cardiomyopathy, or structural abnormalities. They may be difficult to notice during daily activity and require professional auscultation and imaging to clarify the cause.
🐶 In dogs
In dogs, murmurs may come from congenital defects, degenerative valve disease, or other changes in cardiac blood flow. The sound characteristics, including timing and location, help identify the likely affected area.
Clinical signs you can observe
Check whether your pet shows any of the signs below. If several apply, seek veterinary care promptly.
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Possibly Related Conditions
Conditions owners commonly find associated with this symptom — tap to learn more.
Aortic Stenosis
Cardiac pathology impairs contractility, rhythm, or valve function. This cardiovascular dysfunction manifests as heart murmur.
Atrial Wall Tear
Structural or electrical cardiac abnormalities impair pump function. This cardiac dysfunction manifests as heart murmur.
Cardiomyopathy, Restrictive-Cats
Heart disease reduces cardiac output and tissue perfusion. The circulatory compromise presents as heart murmur.
Myxomatous Mitral Valve Disease
Heart disease reduces cardiac output and tissue perfusion. The circulatory compromise presents as heart murmur.
Ventricular Septal Defect
Cardiac pathology impairs contractility, rhythm, or valve function. This cardiovascular dysfunction manifests as heart murmur.
Bronchitis, Chronic
Cardiac pathology impairs contractility, rhythm, or valve function. This cardiovascular dysfunction manifests as heart murmur.
This page helps owners understand symptoms and recognise risk; it cannot replace an in-person veterinary examination, diagnosis or treatment. If your pet shows any symptoms, please consult a qualified veterinarian as soon as possible.