Deer are beautiful and charming animals. They belong to a large group of mammals and are considered to be the spirit of the forest. With their relatively large eyes and long ears, deer look very agile.

The bodies of deer usually show dark brown, green, red, and other colors. Because deer are very good at hiding from hunters, their skin color easily blends with leaves, bushes, grasses, and other natural environmental colors.

Deer can reach lengths of 2-3 meters but weigh less than 200 kg. This explains why deer run very fast and are often used as a metaphor for "deer-like agility."

Deer live in a wide range of environments, from the Arctic Circle to the savannah. Generally, they live in quiet woodlands or grasslands and are good at finding nutritious food such as young grass, leaves, and buds in the woods or grasslands.

Although deer are seemingly solitary animals, they are also more group-oriented. They often form groups to protect each other and make efforts to survive and reproduce. Among them, the females in the herd are especially valuable because they are proficient in various skills such as finding food, caring for their young, and protecting the herd.

Deer are very sensitive and have well-developed senses of hearing, sight, and smell. They are often able to respond to danger before it comes and escape it. This characteristic can also be used in training, making deer excellent monitoring animals because they not only adapt to their environment but also respond accurately due to their acute senses.

However, deer are often seen as prey in the eyes of humans. In the past, deer were often regarded as excellent hunting objects and were therefore kept and farmed. But now, more and more people are beginning to pay attention to deer as a creature that is not only a part of the ecosystem but also an important force in defending the environment.

Moreover, there are some more creative things about deer. In Japan, deer are regarded as national treasures, and their appetite is so amazing that they are also seen as the guardians of the environment for garbage.

In some parks in Japan, deer are often raised to act as environmental caretakers, consuming dust, shredded paper, and other trash in the park while also acting as a medium between visitors and nature.

In addition to the previously mentioned biological properties and environmental role of deer, deer are also widely used in culture, art, and historical legends. In Norse mythology, the deer Beador is the mount of the god Odin, which has nine heads and nine horns.