Cows can sleep standing up, but they can only dream lying down.
745
Bats sleep 18-20 hours per day.
5
47% of people have a nightmare at least once a month.
186
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
The average cat sleeps about 2/3 of the day.
203
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22