Termites work 24 hours per day and they do not sleep.
57
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
Cows can sleep standing up, but they can only dream lying down.
745
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240