The most expensive cow in the world was sold in 2009 for $1.2 million.
-3
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13