Professor Daniel Janzen, a biology professor from the University of Pennsylvania, has spent years of his life cataloguing and photographing a very unique group of creatures: caterpillars that defend themselves against predators by looking and acting like snakes.
Check out some more pictures of “Snake Caterpillars” taken by Professor Janzen below:
Snake caterpillars can be found in Costa Rica, Guatemala, Belize, and some parts of Mexico. Their markings resemble a snake’s head, which they can actually use to “strike” at would be predators (though they obviously can’t bite like a real snake would).
Janzen is an ecologist and what most would call a caterpillar expert. He’s been tracking these insects in Costa Rica since 1978 and has been an expert in the field of entomology (the study of insects) for 50 years.
He splits his time between his labs and the field, spending half the year at the University and the other half in Central America, searching for strange new species of insect like the snake caterpillars.