Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
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
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12