Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
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Mosquitoes don't just bite you, they also pee on you.
11
Early American humans hunted car-size armadillos and used their shells for houses.
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The reindeer is the only mammal that can see UV light.
17
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
Cats and dogs can hear ultrasound.
350
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
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