Cows can sleep standing up, but they can only dream lying down.
745
When dragonflies mate, their tails form a love heart.
22
A domestic cat can sprint at about 31 miles per hour.
274
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Cats and dogs can hear ultrasound.
350
The head of a jellyfish is called the "Bell."
6
Rattlesnake mating sessions have been known to last more than 22 hours.
232
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
59