there is no such thing as too much protein unless your dog has liver issues. Grain free foods are naturally higher in protein as there is no grain so the percentage of protein naturally increases. I like grain free- i don't feel dogs need grains and they are the root of many allergies and often just used as fillers.
Orijen is grain free, Natural Balance has grain free varieties and Merrkicks has a new food- BG- Before Grain.
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