When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
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There's a rare breed of pig that looks like a sheep.
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Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
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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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