Bats sleep 18-20 hours per day.
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
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There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
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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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Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 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.
9