Butterflies are cool, not just because they are beautiful to look at – but because of caterpillar metamorphosis. A caterpillar spends most of its life crawling around – eating – but when it’s time to become an adult, most caterpillars wander away from their food source to find a sheltered, safe spot in which to pupate, or transform into an adult.

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And this is how it works! Filmed in real time and high-def by Allen Miller, the whole process takes just over five minutes.