A varied diet is important for deer because it allows them to get the right nutrients at different times of the year. If winter lasts a long time than often starvation will kill the deer because of a lack of nutrient rich trees. These deer have stomachs specially designed to digest plant matter. Plants contain a rough substance called celluose that most animals cannot digest. Their stomachs are divided into four sections and contain bacteria which break down the celluose found in plants.
Deer eat quickly to avoid being found by predators.
After they feed they go rest in a safe area where they digest their food. Deers live in herds and there are two types of herds. The buck herds are constantly changing because the deer form dominance heiarchies and the strongest male at the time becomes the head of the herd. The males are always fighting among thier herd to become the most powerful member. Usually the fawns stay with their mothers for the first year until her new offspring are born.