Habitat: Shortgrass praries, tundra, coniferous forests, and marshes.  It chooses habitat based on abundant prey, not on habitat type.

Description: Walnut brown back, with white belly.  Short tail, with a few black hairs, but not  entirely black-tipped.  Coat turns entirely white in winter.

Size: 15-22cm long; 25-73g

Diet: Voles, mice, insects, amphibians, birds and eggs.

Fun Facts: In order to escape from predators, they can fit in holes as small as a "loonie"!

Source: Pattie, D. and C. Fisher. 1999. Mammals of Alberta. Lone Pine Publishing.