Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
Parrot parents "name" their children with a signature call.
112
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
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
The largest breed of rabbit is the Flemish Giant.
65
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2