The average cat sleeps about 2/3 of the day.
203
47% of people have a nightmare at least once a month.
186
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
Bats sleep 18-20 hours per day.
5
Cows can sleep standing up, but they can only dream lying down.
745
Honeybees never sleep.
276