Some frogs carry their tadpoles on their backs.
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Some insects undergo complete metamorphosis.
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Some amphibians can absorb oxygen through their skin.
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Some ants farm fungi as a food source.
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Octopuses can solve simple puzzles and open jars.
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A polar bear's fur is actually transparent.
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A honeybee colony functions as a highly coordinated unit.
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Crows can recognize individual human faces.
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