I feed ACANA. Riley Loves it....and I Love it, for him!
I have fed all of them...
Right now I am feeding ACANA/Ranchlands.
If you Google Orijen White Paper starting on Page 26, they talk about PROTEIN. I tried to upload it, here, but it wouldn't let me. It is in a pdf format.
Here is something from the Champion/Orijen website about protein:
Orijen Pet Foods: About ORIJEN: