WorldEater

So you've been gifted a World Eater for a pet?  Despite its name, its a pretty simple pet to care for. All it does is move around with its fluid-like body like it has no care in the world. The only rule is "Dont Feed The World Eater!" Please, not even a crumb. Just one molecule of a food piece can start off a metabolic chain reaction, causing the World Eater to develop an appetite and digestive tract capable of devouring whole planets before the heat from its increased metabolic state causes it to evaporate! .Im starting to think that I should stop selling these little guys...