Cows can sleep standing up, but they can only dream lying down.
745
Parrot parents "name" their children with a signature call.
112
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
The head of a jellyfish is called the "Bell."
6
Early American humans hunted car-size armadillos and used their shells for houses.
12
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