A veterinarian explains what a heart murmur is in dogs and cats, the common causes (like dental disease), how it's diagnosed, ...

When a heart murmur is first heard, your health care provider will want to conduct further testing, usually an ultrasound of the heart called an echocardiogram to identify a possible cause of the ...

Sometimes, a murmur sounds like a humming sound, which can be faint or loud. It might be temporary or persistent. Heart murmurs may be present at birth or develop later in life during pregnancy ...

You may have heard the term “heart murmur.” A murmur is an extra heart sound that can be heard by a stethoscope. Sometimes, the murmur sounds like a humming, which can be faint or loud.

Medically reviewed by Christopher Lee, MDMedically reviewed by Christopher Lee, MD A Still’s murmur is an abnormal heartbeat that presents as low-pitch musical-like sounds coming from the heart ...

A murmur is an extra sound, for example, a swish, as in lub-swish-dub. In dogs under 45 pounds, the most common cause of heart murmurs is chronic valve disease.

However, a murmur also could be persistent and loud, easily heard and sound like a churning mill wheel or cooing seagull. This might indicate a serious heart problem.