Caribou

Reindeer occupy tundra, boreal forest, mountainous terrain, and open northern woodland across the circumpolar Arctic. Both sexes normally grow antlers, an unusual feature among deer, although their timing of antler loss differs. Broad, spreading hooves support travel across snow and soft ground while also assisting swimming. Many populations undertake long seasonal migrations between calving grounds, summer feeding areas, and winter ranges, forming some of the largest moving herds among terrestrial mammals. (Animal Diversity Web)

Reindeer are herbivores that consume lichens, grasses, sedges, shrub leaves, fungi, and other northern vegetation. During winter they excavate snow to reach ground lichens, using their hooves and sense of smell. Breeding occurs during autumn, and females generally produce one calf after gestation of about 228 days. Calves are born during spring, when new plant growth becomes available, and can stand and follow their mothers soon after birth. (Animal Diversity Web)