啮齿目动物老鼠是分布最广,数量最多的一类中小型哺乳动物.它具有相当强的适应能力,全世界除南极外,无论地面、地下、高山、草地、森林、农田、住宅、荒漠、树上或水域,几乎都有老鼠的踪迹.老鼠的繁殖能力惊人,一对老鼠一年能繁殖15000个后代,老鼠的一对门齿终生生长,像凿子般锐利,它嗅觉灵敏,行动机警.游泳更是不在话下. The rodent mouse is the most widely distributed and the largest number of small and medium-sized mammals. It is quite adaptable. Except for the Antarctic, the whole world is ground, underground, alpine, grassland, forest, farmland, residential, desert, There are almost all traces of mice in the trees or in the waters. Rats have amazing reproductive capabilities. A pair of mice can reproduce 15,000 offspring each year. A pair of incisors in mice grow for a lifetime. They are sharp like a chisel, and they are sensitive to smell. It’s more than that.