With the botanical name (Suncus etruscus), they are also known as Etruscan pygmy shrew or as the white-toothed pygmy shrew. It is the world’s smallest known mammal by its mass. It weighs about 1.8 grams, with a body size of about 4 cm without the tail. This animal is very rapid in its movement and it is characterized by fast metabolism. It consumes about 2 times its own body size per day, it feeds on small vertebrates and invertebrates and can also hunt individual of the same size.