Squirrels are mammals belonging to the family Squirrels in the order Rodentia. Squirrels have a slender body shape and longer hind limbs; There are no skin wings between the front and back limbs, and the limbs are strong and robust; The eyes are large and bright, the ears are long, and there is a bundle of hair on the tips of the ears, especially prominent in winter. Because it looks like a mouse and most of them like to gnaw on nuts such as pine cones, they are accustomed to living on trees, especially pine trees, hence the name. Widely distributed in Asia, North and South America, and Europe. Squirrels have diverse habitats. Active during the day, frequent in the early morning, with developed vision and hearing, no hibernation, and a habit of storing food. It is an omnivorous animal that eats a variety of plants and small insects.