網友回答：
snakes are cold-blooded animals. in winter they hibernatein holes which are narrow enough only to hold the snakes bodies. the snakes can sleep through a whole winter without eating and moving. they can not feel any pain. the hibernation period lasts about
溫馨提醒：隨時光變遷，文中所陳述觀點；準確性、難免有所變動，因此文中觀點僅供參考。
