I think this is different with a hammy but we have a bearded dragon and we found out if you don't squash the head of a mealworm it can live though the beardy eating it (beardy's have no teeth so they basically gulp down there food!) and because mealworms have amazingly strong gaw's they can chew and puncture poor beardy's stomach lining! You see this is the reason Im terrified of bugs! Everything about them is wrong!!!!!!! X