Canadian Brand. FirstMate Wild Caught Pacific Fish & Oats Formula uses a combination of herring, anchovies, and sardines as the single protein and only two wholesome grains. The Grain Friendly category is free of corn, wheat, soy, potato and peas making it optimal for daily feeding or sensitivities. The chicken fat used in FirstMate Pet Foods is processed free of protein, eliminating the risk of allergies derived from chicken.