Reindeer, belonging to the family Reindeer in the order Artiodactyla, are animals of the genus Reindeer. Reindeer have a large body shape, with thick and dense coarse fur all over their body. Their head is long and straight, their mouth is thick, their eyes are large, their neck is thick and short, their nostrils are large, they do not have a nose mirror, their nostrils have short fur, their tail is short, and their hooves are wide. Females have smaller horns than males. Reindeer have features such as horse heads, antlers, donkey bodies, and cow hooves, and are commonly known as "four unlike". Reindeer are widely distributed in the cold regions of northern Eurasia, North America, and southern Siberia, generally inhabiting coniferous forests in cold temperate zones. Every year, reindeer undergo a large-scale migration of several hundred kilometers, with female deer leading the entire migration team and male deer following closely behind.