Cows can sleep standing up, but they can only dream lying down.
745
Cats and dogs can hear ultrasound.
350
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
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
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8