Cows can sleep standing up, but they can only dream lying down.
745
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Sloths take two weeks to digest their food.
243
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Tigers can see 6 times better at night than humans.
305
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10