The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
The reindeer is the only mammal that can see UV light.
17
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
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
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6