The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
A scorpion can hold its breath for up to 6 days.
19
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2
Mahatma Gandhi used to travel with his goat so that he could have fresh milk.
11
Bats sleep 18-20 hours per day.
5
The head of a jellyfish is called the "Bell."
6