The mouse cannot be trained. The mouse carries germs and can be infected with the plague if exposed to it for a long time. The mouse is called the house mouse. Mammalia, Rodents, Murines. The character is timid and cunning, the body length is about 7 cm, and the tail length is equal to the body length.

There is a notch on the back of the upper incisors, and the crown of the first upper molar Greater than the sum of the crowns of the 2nd and 3rd upper molars. The coat color varies greatly, generally the back hair is gray-brown to dark brown, and the abdomen is gray-yellow or gray-white. Live in houses, warehouses, fields and mountains. The tunnel is short, the diet is mixed, the staple food and grass seeds. Day and night activities not only bite furniture and clothing in residences, warehouses, etc., steal food and grain, endanger crops, but also infect various diseases. The mouse is one of the main pests. The fecundity is strong, and it can reproduce almost all year round, with an annual output of 3 to 8 times, and each litter of 4 to 8 young. Distributed all over China.