this is the one bigg problem that ive encountered with snakes no one and i really mean no one has the same names or sizes a hopper is a fuzzy is a pinkie so im starting to get my own colony going so that if i need a paticular size i know its the right size but i go with smalls as 3weeks 4 at most med 5 to 7 weeks jumbo ive havent used but that would be breedable size i think