The Largest & Smallest Hearts in the Animal Kingdom

The blue whale has the largest heart, weighing nearly 180 kilograms.

A blue whale’s heart is so big, a human could crawl inside.

Elephants have massive hearts supporting their huge bodies and long lifespans.

Giraffe hearts are powerful, pumping blood up their extremely long necks.

Birds have relatively large hearts to support flight and high metabolism.

Ants and tiny insects possess microscopic hearts called dorsal vessels.

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