Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
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Sloths take two weeks to digest their food.
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Dolphins have names for one another.
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Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
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