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Mammals
Biggest, Strongest, Fastest and Other Extremes

What is the smallest mammal?

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July 23, 2015 9:55AM

By mass, the smallest mammal is the Etruscan shrew which weighs less than one gram and is between 1.5 and 2 inches in length. By skull size and length, the smallest mammal is the bumblebee bat (aka Kitti's Hog-nosed Bat) which is a little over one inch (30-40mm) in length and also weighs between 1g and 1.5g.