Our boxer Zeus is now 2 years old and has been on orijen since he was a little over 6 months old. I switched him to the orijen adult at that point, and ever since he has been going back and forth between that and the 6 fish formula. He loves the food and does great with it. So in my opinion I wouldn't be worried about the high protein of orijen, unless your dog has issues with it, then i wouldn't. Hopefully this is at least a little helpful.