The Slowest and Fastest Heartbeats in the World

Exploring the Fastest and Slowest Heartbeats in the Animal Kingdom

What’s the fastest heartbeat among animals, and how slow can a heartbeat go while still sustaining life? Animals showcase some fascinating extremes, and their heart rates are no exception! From the tiny shrew’s rapid pulses to the slow, methodical beats of a crocodile, today’s episode of That’s Fascinating dives into the incredible range of animal heartbeats.

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