In nature there are no synthetic supplements, so dogs and wolves derive their complete nutritional needs naturally by consuming whole animals which contain all of the nutrients they need to thrive. That’s why you won’t find long lists of synthetics in ORIJEN dog foods. Loaded with richly nourishing ratios of fresh meat, organs, and cartilage or bone, plus fresh cage-free eggs, ORIJEN provides a natural source of virtually every nutrient your dog needs to thrive.