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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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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A 42-foot sperm whale has about 7 tons of oil in it.
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Domestic pigs average a top speed of about 11 miles per hour.
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Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
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