Measurement: Size: 7.5-11.5 cm Weight: 4.1 g (0.14 oz)
Description: This exceedingly common shrew is our most common. The name reflects a mask that may or may not be visible. It resembles a dark area on the nose, but is not often visible. They are gray-brown above, and silvery-gray on the lower sides, and belly. They have the typical elongated nose of shrews, and the ears are flat and almost invisible. The tail is bare of fur, and the pink feet each have five toes (as opposed to the four toes of mice). Masked shrews are very secretive, scurrying around beneath the leaf litter looking for insects, earthworms and even vertebrates like infant mice. They may eat in excess of three times their weight each day. They are extremely helpful in keeping down the population of harmful forest insects. They are found in all habitats, from wet to dry, and from the montane to the alpine.