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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Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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Dolphins have names for one another.
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In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
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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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