The average cat sleeps about 2/3 of the day.
203
Cows can sleep standing up, but they can only dream lying down.
745
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Honeybees never sleep.
276
The strangers in your dreams are actually people that you've seen in real life.
50
The human brain is more active during sleep than during the day.
28