have large, concave hooves that are ideal for traveling
over snow or soft ground, and for digging in search
of snow-covered lichens. The hooves are sharply
edged for ice travel and are wide to serve as paddles
when swimming. Caribou prefer mostly barren land
during the summer months, moving to areas of mixed
forests during the colder months. Caribou are herbivores.
Their main food source is lichens, which gives caribou
an advantage in the more harsh northern areas of
its range where vegetation is scarce. The common
"caribou moss" is actually a type of lichen (Cladonia
rangiferina), which is a major food for caribou.
Caribou also eat vegetation such as grasses, sedges,
birch and willow leaves, and mosses.