All shrews are small, most no larger than a mouse. The largest is the Asian house shrew ("Suncus murinus"), which is about 15 cm long and weighs around 100 grams. Several are very small: the Etruscan shrew ("Suncus etruscus"), is about 3.5 cm and 2 grams. It is the smallest living terrestrial mammal and the smallest type of shrew.