Cows can sleep standing up, but they can only dream lying down.
745
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
The colossal squid has the largest eyes in the world.
4
There's a rare breed of pig that looks like a sheep.
14
A group of pugs is called a grumble.
10