Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
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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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The elephant brain weighs about 6,000g.
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Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
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The head of a jellyfish is called the "Bell."
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