The most yolks ever found in one chicken egg was nine.
163
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
All the swans in England are property of the Queen.
36
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
Dogs have been man's pet for over 14,000 years.
224
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4