I used to have a mouser, i would feed her between 3 and 5 mice in a single feeding, after a month or so of that, she started to get real, real hungry whenever there was a rodent smell around. Now she will pound out rats of any size, but lately i can only get smalls, so 2 smalls every 7 days for her is what she gets and shes still hungry.

Even though they can overeat, i don't see that big of a problem with it unless your purposely power-feeding to get them up to weight, then your just going to have problems and slugs. Now if its just a pet or your not planning on breeding any time soon, i don't see any problem with feeding them more often and more food.