The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
The most expensive cow in the world was sold in 2009 for $1.2 million.
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Sloths take two weeks to digest their food.
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Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
A 42-foot sperm whale has about 7 tons of oil in it.
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