The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Cats recognise the voice of their owner, but never evolved to care.
22
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
Dogs sometimes fake being sick to get attention.
26
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4
The largest earthworm on record was found in South Africa and measured 22 feet.
151