In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
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Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
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The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
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Sharks, like other fish, have their reproductive organs in their chests.
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