Etruscan shrew
Animal
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The Etruscan shrew, also known as the Etruscan pygmy shrew, white-toothed pygmy shrew and Savi’s pygmy shrew, is the smallest known extant mammal by mass, weighing only about 1.8 g on average.
The Etruscan shrew has a body length of about 4 cm... Wikipedia
Lifespan: 2 years
Mass: 0.046 – 0.088 oz (Adult)
Scientific name: Suncus etruscus
Length: 1.2 – 2 in. (Adult, Without Tail)
Conservation status: Least Concern
Gestation period: 27 – 28 days
Life expectancy: around two years