When you shave a guinea pig it looks like a little hippo.
19
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
The elephant brain weighs about 6,000g.
274
There are approximately three chickens for every human on Earth.
13