It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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There's a rare breed of pig that looks like a sheep.
14
Early American humans hunted car-size armadillos and used their shells for houses.
12
Domestic pigs average a top speed of about 11 miles per hour.
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A 42-foot sperm whale has about 7 tons of oil in it.
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