Sheep, goats, octopuses, and toads have rectangular pupils.
7
Sharks, like other fish, have their reproductive organs in their chests.
248
There's a lizard known as the 'Jesus Lizard' that can run across water.
11
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Condoms were originally made of animal intestines or linen.
347