What genus is mouse?

Rat, one of the 12 zodiac animals, is the first in the earth. Mouse mouse is small and exquisite, agile and flexible. When mice were young, they were the most courageous and active. There are three main reasons why rats rank first in the zodiac: First, the arrangement of the zodiac in folklore stories. Secondly, Chinese ancient scholars explained the relationship between earthly branches and Xiao beasts from the perspective of twelve o'clock in ancient times. Thirdly, according to China people's belief in Yin and Yang. Zodiac is the twelve animals used by some ethnic groups in China and East Asia to represent the year. They are collectively called the Zodiac, that is, mouse, ox, tiger, rabbit, dragon, snake, horse, sheep, monkey, chicken, dog and pig. They are associated with twelve earthly branches (Zi, Chou, Yin, Mao, Chen, Si, Wu, Wei and Zhu) in turn. Everyone takes the symbolic animal of his birth year as the zodiac, so people in China often use the zodiac to calculate their age. Cycle once for a round.