Sharks have been on the planet longer than trees.
14
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
When cats are happy, they may squeeze their eyes shut.
10
In Australia, there are spiders big enough to eat snakes.
20
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
A group of kittens is called a "kindle".
10
Early American humans hunted car-size armadillos and used their shells for houses.
12
Female kangaroos have three vaginas.
2