The Basenji dog is the only dog that is not able to bark.
4
The elephant brain weighs about 6,000g.
274
The cat brain weighs about 30g.
167
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40