Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
When dragonflies mate, their tails form a love heart.
22
Mosquitoes don't just bite you, they also pee on you.
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When cats are happy, they may squeeze their eyes shut.
10
Lobsters have blue blood.
476
The cat brain weighs about 30g.
167
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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