The cinereus shrew is widespread in northern North America and is often found in moist places such as forests and river or lake edges. It is active at night and feeds mainly on invertebrates.
Its back is brown and its underside grayish white. The tail is brown above, pale underneath, and blackish at the tip; the coat tends to darken in winter.
It hunts mainly on the ground after dark, though it can climb into low plants and shrubs. It eats invertebrates such as insects and spiders, with prey varying by region.
An extinction-risk assessment has not been added yet.