The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
A group of pugs is called a grumble.
10
Early American humans hunted car-size armadillos and used their shells for houses.
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Only 3% of bird species have penises.
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Sharks, like other fish, have their reproductive organs in their chests.
248
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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