The rats in Dragon Necropolis are the Chetari’s. You can tell you have one of them if it looks like a lab rat gone wrong. They wear some kind of leather tunic, which isn’t any kind of special loot. You shouldn’t attempt these rats unless you have 1 level 57+ group two 55+ groups or 3 or more 50+ groups. The necessities in this zone are an enchanter, cleric, warrior. Monks are also nice as well as bards. Don’t be tricked by the small size of the rats, for they are quite tough. They range from level 48-58 but most of them are level 54+. More information on these rats would be helpful since all this information was gotten from my guild since I have never hunted them.