Any of various mammals of the order Rodentia, such as a mouse, rat, squirrel, or beaver, characterized by large incisors adapted for gnawing or nibbling.
任一种有适于啃或咬的大前齿的啮齿目哺乳动物，如鼠、大家鼠、松鼠或狸。
Both Otter and Beaver along with Squirrel are often perceived as playful and joyful in nature.
水獭、海狸和松鼠常常因为嬉戏和欢乐的本性而被觉察。
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