Bats sleep 18-20 hours per day.
5
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
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
Condoms were originally made of animal intestines or linen.
347
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
There are approximately three chickens for every human on Earth.
13