They will find burrows or caves and fall into a deep sleep until the weather becomes ware enough for them.
Xem thêmSea otters hold hands when they sleep.
Xem thêmIt's quite common for a mother and her pup to hold each other's hands so that they don't drift away from each other while they sleep.
Xem thêmHorses can sleep standing up or lying down.
Xem thêmHowever, these creatures can sleep either standing up or lying down.
Xem thêmA group of horses will not go to sleep at the same time - at least one of them will stay awake to watch out for the others.
Xem thêm