Aspidites have no issues tackling larger(relative to the snake's girth) prey. As a general rule keepers offer smaller rodents(and chicks/quail) more often because, feeding predominately on reptiles in the wild, their natural diet is virtually fat free. Older/retired breeder rodents tend to have much higher fat content so they should be avoided. Not because these critters can't take larger meals, simply because they don't handle fatty diets well.