As residents of Colorado’s Front Range, we have encountered our fair share of deer, prairie dogs, eagles, and a host of other charismatic creatures, but there is more to local biodiversity than meets the eye. In this presentation, we will explore some of the smaller players in these natural systems, focusing on the world of caterpillars. Why do caterpillars eat some plants and not others? How do they defend themselves against their enemies? How is it that a caterpillar can develop into a wasp, rather than a moth or a butterfly? Join us in investigating the wealth of survival strategies used by our local caterpillars, and the evolutionary forces that make them tick.