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15 amazingly deceptive caterpillars

By: Anna Norris on Jan. 15, 2014, 3:20 p.m.
Walnut sphinx caterpillar

Photo: Vilseskogen/Flickr

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Walnut sphinx caterpillars

Who knew that caterpillars could make sounds? The walnut sphinx caterpillar actually whistles when it's grabbed by a bird in hopes that the bird will drop it. It's able to send air out tiny holes in its abdomen.

Here's a YouTube video of the critter in action: