<<Disclaimer: Verify this information before applying it to your situation.>> One of the many changes we made en route to a GF lifestyle was switching our brand of dog food. We now use a lamb and rice formula. It may not be completely GF, but at least it's much lower in gluten than other options. Several dog companies make lamb and rice foods (Science Diet, Iams, Eukanuba, and even Purina). Bon appetit, doggies!