Note that the mane color varies within sex and between individual animals. The antlers of cows tend to be much shorter than bulls, and more slender and irregular in shape. Habitat Tracks Caribou have the widest and roundest hooves of all deer species. Their large, concave hoofs are spread widely to support the animal in snow and soft tundra and function as paddles when caribou swim across lakes and rivers during migration.
Male caribou tend to have larger front hooves than females.
Scat Caribou scat differs in size and shape depending on the amount of moisture obtained in vegetation. During the winter, caribou diet on small shrubs with high fiber contents that appears in small, concave pellets. In the summer, scat is seen as soft clumps of mass resulting from a diet of lush, wet vegetation. Caribou are found in a variety of habitats from the Arctic coastal plain to foothills and mountains. Calving areas are usually located in mountains or on open, coastal tundra.