Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
Denmark has twice as many pigs as there are people.
66
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
When you shave a guinea pig it looks like a little hippo.
19
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9