Hi kobe –
The trout and salmon formula is appropriate for large breed puppies. They recently came out with two new formulas – duck and zssential (a multi-protein formula) – and I haven’t had a chance to look into either of those formulas yet. While I do believe you should reserve a couple novel protein sources in the even that your dog ever does develop allergies, there’s no reason to avoid a limited ingredient kibble just because your dog doesn’t have food allergies. In fact, I prefer single protein kibbles so that when I rotate I know my dog isn’t getting exposed to the same protein source daily. My dogs eat raw now and I only feed one protein per meal.
