Cows can sleep standing up, but they can only dream lying down.
745
The octopus does not have a blind spot.
273
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
16
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8