I have a 13 year old girl that has always had skin problems but recently got much worse. I took her to the vet but the usual vet was not in and had a fill in. The usual vet had never really offered any suggestions to help her skin issues but this guy suggested that I either do allergy testing ($300.00) or do food trials. He suggested staying away from the usual meats and grains. He suggested duck and potato but I haven't been able to find a quality food with those ingrediants. I bought small bags and did a taste test with Solid Gold Barking at the Moon(Fish/Beef/Potato), Wellness Core(Fish/Potato) and Taste of the Wild (Lamb/Sweet Potato). I have an 11 month old pup and both the dogs have been eating Royal Canin GSD and they both free feed. The older dog, Joy eats while I'm at work and when the pup is confined, so I don't know which one she eats first but I do know she leaves the Royal Canin. The 11 month old consistantly eats the Solid Gold first. He also leaves the RC. I'm not sure if the Solid Gold is good for the younger dog or if the beef in it is a problem for the older dog. I can't afford to feed them both Orijen but might could supplement with it. I could probably do Acana or Nature's Variety Instinct (the only five star hypoallergenic I could find locally) but I still don't know if any of them would be inappropriate for the pup. I need to get more food asap so any input as to what I should go with, let them try or what I should avoid would be greatly appreciated.