My girl is actually probably eating adult mice not hoppers, I looked on rodent pro to see what they consider "hoppers" and shes deffinately pounding adults for sure. The females are usually smaller but the males are bigger. Probably close to the 30 gram marker maybe. Also I found a local place that sells rat fuzzies, mouse hoppers, the works so I might just switch her over to rats...hey does anyone happen to know if rats smell just as bad as mice do? Cuz my collection is ever increasing and I'm thinking about breeding down the line, just don't know what to breed...