What he has had so far has been around 27% which is lower than the Orijen food he was on before the issue showed up. Not really that low of a protein but on the lower end of what I can find locally. I still check the cystine levels in the food also and make sure it isn't too high. I am in the process of switching him back to Acana lamb and apple right now because of allergy issues with the food he has been on for the past two months which is Zignature Kangaroo. He has always done well on Acana