Good question and thanks for the advice (from a future puppy owner). We are on a waiting list for a puppy in April and I have been lurking on the boards for a while and finally registered now that it's only a month till the puppy is born (something about not wanting to get too excited, though I talk about the puppy nonstop to my family!). The puppies will be fed Nutro by the breeder (though I'm not sure if it's Ultra or what) and I'd like to use the information I've learned on the boards here to be able to appropriately respond to the puppy's nutritional needs!!! In case we need to change, the information you provide on weaning is very helpful! Thanks...