Cows can sleep standing up, but they can only dream lying down.
745
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
In the movie 'The Wizard Of Oz', Toto the dog's salary was $125 a week, while Judy Garland’s was $500 a week.
5
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Sharks have been on the planet longer than trees.
14
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17