Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
A puppy is born blind, deaf, and toothless.
16
Squirrels forget where they hide about half of their nuts.
698
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Condoms were originally made of animal intestines or linen.
347
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