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Smallest mammal by mass

The current smallest mammal by mass record is 0 lb, held by Etruscan shrew. Last checked October 9, 2026.

0

lb

Etruscan shrew

Mediterranean region, Asia and Africa

Holder: Etruscan shrew
Record: 0 lb
Metric: 0 kg
Exact figure: About 1.8 g (0.06 oz)
Location: Mediterranean region, Asia and Africa
Last checked: October 9, 2026

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