A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
A dork is a whale's penis.
327
There's a rare breed of pig that looks like a sheep.
14
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
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
In Australia, there are spiders big enough to eat snakes.
20