Bats sleep 18-20 hours per day.
5
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Moths are unable to fly during an earthquake.
328
Cat families usually play best in even numbers. Cats and kittens should be acquired in pairs whenever possible!
156
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
In Australia, there are spiders big enough to eat snakes.
20