Unlike us mammals and birds, who are endotherms (meaning we generate most of our own body heat internally through metabolic processes, like a personal furnace), roaches are ectotherms (sometimes colloquially called "cold-blooded"). This means their internal body temperature is largely dictated by their external environment.

If you keep insectivorous pets (from bearded dragons to dart frogs) you've undoubtedly heard the term "gut-loading." It's the practice of feeding your feeder insects (crickets, roaches, mealworms, etc.) a highly nutritious diet shortly before offering them to your pet. You know you're supposed to do it, but have you ever paused to wonder about the science behind it?

We all know people with distinct personalities: the adventurous friend, the cautious planner, the life of the party, the quiet observer. We even see it in our pets... the bold dog, the skittish cat, the ferret with an unshakeable mischievous streak. But what about a creature as seemingly simple as a discoid roach? Do these ancient insects, often dismissed as mere automatons, possess anything resembling a "personality"?