mouselike

adjective [原级]胆小如鼠的；灰头灰脸的；老鼠的

These mouselike creatures are among the small minority of mammals — less than 5 percent — who share humans’ propensity for monogamy.^{这些类似老鼠的生物是哺乳动物中少数（不到5%）有人类一般的一夫一妻制倾向的动物之一。}