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Wildlife Experts Trivia

oldyaker

Well-Known Member
Aug 26, 2003
1,949
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What mammal has the fastest heartbeat? •hamster •mouse •hummingbird •pygmy shrew?
I missed it and should not have changed my answer. Also of interest, what mammal has the slowest heartbeat?
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On average, the human heart beats at a resting rate of 60 to 100 beats per minute. The pygmy shrew’s heart, on the other hand, beats at more than 10 times that average. At over 1,200 beats a minute, the shrew has the most rapid heartbeat of any mammal. Clocking in at less than an ounce, the heart rate of this tiny mammal relates to its size, as with most animals. On the opposite end, the 400-pound heart of a blue whale has an incredibly slow heart rate, at 10 to 30 beats per minute.
Source: National Geographic | Date Updated: August 3, 2020