The guinea pigfront foot structure and the general rodentia are different, is nimblyunable nimbly to take takes the goods to deliver in the entrance, alsois vertically unable vertically to climb up.

• 前脚有四根脚趾，脚底无毛。天竺鼠的前脚构造和一般啮齿类不同，无法灵活的拿取物品送入口中，也无法垂直攀爬。