Do you know some interesting sleeping habits of animals? When you get really s, you may nod off for a short time. What about animals? Some of them have such.(特殊的) habits. Chinstrap Penguins in the South Pole nod off more than10,000 times a day!
A group of (科学家) studied 14 Chinstrap Penguins in the South Pole. They put electrodes(电极) on the penguins' heads and necks to see their brain (活动). They also (跟随) and watched the penguins by GPS for 10 days.
The penguins n have a long sleep, the longest sleep is only 34 seconds. On average, the penguins sleep 4 seconds at a time. But in one day, they sleep for more than 11 hours. So they get enough rest. If they sleep for too long, the babies will (可能地) get hurt by seabirds and other penguins. So they need to p their eggs and babies. Also, their home is usually noisy and (拥挤的). So the parent penguins just have very short sleep to stay alert(警觉的) . That's actually a way to live in the (自然).
