Under normal circumstances, cats are not afraid of bacteria when they eat mice, because cats have immune function against mouse bacteria, so they will be fine if they eat mice in time. Moreover, cats eating mice can also supplement taurine and improve night vision, which is good for cats. The body is in better shape. However, if mice are infected with other diseases, cats may also be infected after eating them, and some mice may have eaten rat poison, so it is best not to let cats eat mice to avoid affecting the cat's health.