We share 70% of our DNA with a slug.
218
Spiders have transparent blood.
56
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
It is physically impossible for pigs to look up into the sky.
361
Cats sleep for 70% of their lives.
8
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The blesbok, a South African antelope, is almost the same color as grapejuice.
14