The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
A group of kittens is called a "kindle".
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
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8