Small mouselike mammal with a thick neck and very short tail; two gnawing teeth (incisors) on both upper and lower jaws
Alpine and lowland tundra, muskegs
Shoots and leaves of grasses and sedges; bark, twigs, and buds of willow and dwarf birch; some insects, berries, fungi
Owls, jaegers, gulls, rough-legged hawks, arctic foxes, weasels, wolves
Collared lemmings turn white in winter and grow shovel-like claws for digging through ice and snow.
|