I have a 2.5 years old Sheppard/Huskie mix.I was feeding her Eukanuba Large Breed Lamb for puppies for the first year and adult for past year and a half. I had no problems with the food, everything was great, then I heard about Go! Natural and how healthy it is for our pets so I switched to it, I switched to the grain FREE called NOW! (Turkey/Duck Formula) Since then my dog started to scratch a lot, she now has a bold spot on her nose area from scratching, Fleas are not an issue and never has been, we also use Revolution on her as preventative maintenance. I am wondering if perhaps my dog has been used to Lamb formula and now has problem adjusting to Turkey/Duck formula. I guess what I am trying to say is that every dog is different and sometimes switching to what you believe is way better food, may not necessarly go well with your pet. I am trying to get hold of somebody at the Go! company, see if they can provide any suggestions.