🏆 which
Which mammal has the largest heart relative to body size?
Quick Answer
The shrew is among the mammals with the largest heart relative to body size because of its extremely high metabolism.
The Full Story
Small shrews have exceptionally large hearts relative to their body size because their circulation must support a very fast metabolism. Their hearts beat at a very high rate to keep oxygen and nutrients moving. This is a classic example of how small mammals often have much greater relative organ demands than large ones. The exact record can vary by species, but shrews consistently rank near the top.
Key Facts
1.Shrews have very high heart rates
2.Their heart is large relative to body size
3.High metabolism drives their circulatory demands
YouTube Angle
Suggested video title for this topic:
"The tiny mammal with a heart that works overtime"
Was this answer helpful?
Tap a reaction — it helps us pick what to cover next.