My 4 month old is on Blue Lomgevity for puppies right now. He LOVES the food, has solid stools, but is very gassy during the day. These are the silent but can clear a room type! So my question is should I switch foods or rather would it help or are some Retrievers just gassy? The next question would be what should I switch him to without losing quality. It's also important that I can get it at my local petsmart to save on hassle. Thanks for any feedback and Merry X-mas!