Jellyfish as a species are actually older than dinosaurs and sharks.
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The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
When you shave a guinea pig it looks like a little hippo.
19
Penguins have a gland above their eye that turns saltwater into freshwater.
12