The present disclosure provides a pet food comprising: a) a pet food core b) one or more active layers surrounding all or a portion of the pet food core and c) an outer layer at least partially surrounding the active layer wherein the outer layer comprises a fat and/or a pallatant wherein the active layer may comprise one or more of an antioxidant compound and a pro oxidant compound. The active layer may be enriched with the pro oxidant mineral compared to the pet food core and/or the pet food core and the active layer may have different total concentrations of antioxidant compounds and/or the pet food core and the active layer may comprise different antioxidant compounds and/or the same antioxidant compounds in different concentrations.