So we are picking up our pup in a few weeks. I wrote the breeder and she said they are feeding the pups Eukanuba large breed puppy food. I know that they are very good breeders and the pups are in excellent health and are taken care of really well, but I have read that there are better options out there for dog food. My question is: should we keep her on the same diet for a period of time or immediately start transitioning her to another brand? Just would like some advice on how to go about that. And second, what brand would you recommend switching to? I have also heard incorporating probiotics is good as well...any recommendations there? Thank you for your help!