Early American humans hunted car-size armadillos and used their shells for houses.
12
Only 3% of bird species have penises.
0
Parrot parents "name" their children with a signature call.
112
Squirrels forget where they hide about half of their nuts.
698
The head of a jellyfish is called the "Bell."
6
Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
26
There's a rare breed of pig that looks like a sheep.
14