Jellyfish as a species are actually older than dinosaurs and sharks.
383
Sheep, goats, octopuses, and toads have rectangular pupils.
7
The reindeer is the only mammal that can see UV light.
17
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
When you shave a guinea pig it looks like a little hippo.
19
Sharks have been on the planet longer than trees.
14
Cats and dogs can hear ultrasound.
350
The elephant brain weighs about 6,000g.
274