Cows can sleep standing up, but they can only dream lying down.
745
Cats sleep for 70% of their lives.
8
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
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
Early American humans hunted car-size armadillos and used their shells for houses.
12
The elephant brain weighs about 6,000g.
274