The breeders I am purchasing my pup from use Iams ProActive Health MiniChunks (1+ years) and said that my puppy doesn't necessarily need specifically puppy dog food and so this is why they use this kind of Iams. I will be bringing her home in 2 weeks and want to have a dog food picked out for her. Unless I continue to use the Iam's they use, I planned on buying a small bag of the Iam's and mixing it with the new dog food and gradually switch her completely over. What dog food did you or do you use for your puppy (she will be 9 1/2 weeks, just for reference) and why? I know I can talk this over with my vet (when I find one! on the list of things to do before bringing Roxy home) but I thought I would throw this question out a group of GSD owners! Also, how much/how often should I be feeding her?