Cows can sleep standing up, but they can only dream lying down.
745
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
Rattlesnake mating sessions have been known to last more than 22 hours.
232
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The octopus does not have a blind spot.
273
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14