Today we are going to see something about tiny organisms. Today, we will see facts about the Tiniest or Smallest Living Mammal in the world by Mass. The criteria for today is that the Organism has to be a Mammal, its Species must not be extinct, but can be on the Endangered or Vulnerable List. Thirdly, it has to be the Tiniest by Mass, not by size. The Organism that meets our criteria is the Etruscan Shrew (Photograph on the right).The Etruscan Shrew (Suncus etruscus), also known as the Etruscan Pygmy Shrew or the White-toothed Pygmy Shrew is the smallest known mammal by mass, weighing only about 2 grams, although the smallest known mammal by skull size is the Bumblebee Bat. The smallest mature specimens of this shrew are thought to weigh about 1.3 grams and measure 36 mm (1.42 inches) long. This small mammal is 60 mm from the tip of the nose to the base of the tail; the tail is about 40 mm long. This shrew has a lifespan of 15 months.
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