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Don’t eat me: Caterpillar that looks like snake’s head

snake-butt-caterpillar-1.jpg

This is a series of photographs from University of Pennsylvania biology professor Daniel Janzen of a species of caterpillar in Costa Rica (and other Central American countries) that has a realistic looking snake’s head on its underside. Plus it will actually try to strike like a snake if you get too close.
via Geekologie

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Image: Daniel Janzen

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