Cows can sleep standing up, but they can only dream lying down.
745
The seahorse is the only fish to have a neck.
12
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
Sharks have been on the planet longer than trees.
14
Sheep, goats, octopuses, and toads have rectangular pupils.
7