It is a small rodent known for its flexible body, keen senses, and rapid reproductive ability. Having sharp front teeth, these teeth will continue to grow, so it is necessary to constantly gnaw on hard objects to grind them. It is a nocturnal animal with excellent hearing and smell, but relatively weak in vision. It is an omnivorous animal with a wide range of food sources. Highly adaptable, able to survive in various environments, from cities to wilderness, from cold regions to tropical rainforests. The reproduction speed is very fast, and a pair of mice can produce a large number of offspring in a short period of time. Plays an important role in scientific research, especially in the fields of genetics and medical research.

The marmot is a mammal belonging to the family Muridae in the order Rodentia of the class Mammalia; Also known as groundhog. The largest terrestrial and burrowing herbivorous and hibernating wild animal in the squirrel family. There are 14 subspecies worldwide, with 4 species in China. Distributed in Siberia and Mongolia of Russia, and also in Inner Mongolia of China. Resting in plateaus, meadows, foothills, and other areas, the lower edge of sunny slopes in plains and mountains is its high-density aggregation zone. Active during the day, with a large appetite, gnawing on a large amount of grass every day, enduring hunger and satiety, and preferring juicy feed with high water content, post rain grass, and dew grass. Likes to live in groups, easy to drive, does not harm people, is not heat-resistant, afraid of direct sunlight, and has strong disease resistance.

The Cricetinae subfamily is the smallest subfamily of the Cricetidae family, including only the Palearctic (Eastern Hemisphere) hamsters, which are small rodents. There are about 60 genera, with 3 genera and 9 species in China. Short and thick body shape; Short tail; Cheek pouch; Most types of skulls have no obvious ridges; The skull does not significantly enlarge; Listening to bubbles; Molar chewing mask with conical tooth tips. It inhabits a wide range of environments, including grasslands, deserts, semi deserts, farmland, and alpine grasslands. No hibernation habit; All of them are terrestrial species, mainly engaged in cave living, living by digging caves, with complex cave systems and specialized warehouses for storing food; Strong adaptability. Mainly feeds on plants, but also on animal carcasses.

The finless porpoise is a mammal of the order Rodentia and family Hylidae. Large body size. Wide head, short and round ears, small eyes; The kiss is thick and short, with a truncated front end and a large upper lip; The limbs are short and thick, with four toes on the forefoot and three toes on the hind foot, with slight webbed spaces between the toes; The body hair is thick and sparse, with a dark grayish yellow color. Distributed in South America, living in the Amazon River basin. They inhabit riverbanks or swampy areas, often in family clusters. Gentle in personality, quiet in nature, slow in movement, able to quickly jump into the water and escape when faced with danger. Proficient in swimming and diving, able to swim long distances underwater or hide in aquatic plants for extended periods of time without moving. Feed on reeds and other plants in the river.

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.

Mouse is a general term for rodents in the order Rodentia and family Muridae. The body length of a mouse is about 17.5 centimeters, and its tail is shorter than its body length; Short and thick ears; The hind legs are thicker and longer than 33 millimeters. Due to its sharp pointed mouth and ability to make holes, it is also known as a mouse. Commonly found in residential areas, sewers, haystacks, farmland, vegetable gardens, graveyards, riverbanks, and other places. Its cave system is complex, with multiple and long branches, and it is most active at midnight. Rats are omnivorous and often steal crops. Due to the frequent biting of hard objects by mice, their vitality is also extremely strong. They not only engage in sexual theft and cause harm everywhere, but also spread diseases, posing a great threat to human life.