The Basenji dog is the only dog that is not able to bark.
4
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
Sloths take two weeks to digest their food.
243
Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19