Cows can sleep standing up, but they can only dream lying down.
Squirrels forget where they hide about half of their nuts.
Drivers kill more deer than hunters do.
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
Lobsters have blue blood.