Rattlesnake mating sessions have been known to last more than 22 hours.
232
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
The elephant brain weighs about 6,000g.
274
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Sloths take two weeks to digest their food.
243
The reindeer is the only mammal that can see UV light.
17