A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The quills of a porcupine are soft when they are born.
90
Domestic pigs average a top speed of about 11 miles per hour.
182
It's possible to lead a cow upstairs, but not downstairs.
50
It is physically impossible for pigs to look up into the sky.
361
Some ribbon worms will eat themselves if they can't find any food.
-33
To escape the grip of a crocodile's jaws, push your thumbs into its eyeballs. It will let you go instantly.
155