Cats and dogs can hear ultrasound.
350
Sheep, goats, octopuses, and toads have rectangular pupils.
7
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
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
Parrot parents "name" their children with a signature call.
112
The head of a jellyfish is called the "Bell."
6
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17