The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Dolphins have names for one another.
18
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Gorillas can catch human colds and other illnesses.
205
Whales and dolphins can't taste anything other than salt.
11
Denmark has twice as many pigs as there are people.
66
A cow produces around 200,000 glasses of milk in her lifetime.
373