The masked shrew has the largest range of any North American shrew, and occurs throughout Alaska, Canada, the northern third of the U.S., as well as portions of the Great Basin, Rockies, and ...

These nests may be 30.5 cm (12 in) beneath the surface of the soil or under a rock or log. Food and Feeding Behavior: The neurotoxic saliva of the short-tailed shrew is a unique adaptation among North ...