Bats sleep 18-20 hours per day.
5
Cats sleep for 70% of their lives.
8
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
George was the world's largest dog who weighed 233 pounds, stood at 43 inches tall from paw to shoulder, and ate 180 pounds of food a month.
7
Condoms were originally made of animal intestines or linen.
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