This is wierd kind of. I have one female rat that I let breed in with the colony who is a really bad parent...she has the babies and abandons them which I don't mind because I have 2 female rats who will take over all the pinkies and I need the production at the moment. But I have one little black pied female.. who hasn't even HAD a litter yet.. thats producing milk and feeding a set of 9 pups.. I've kept a watch and she's the only one taking care of them at the moment. I didn't think they could produce milk without having a litter first. I suspect the black female is gonna end up being a great parent just from this.. I just thought it was kind of odd...

