California Natural Salmon & Sweet Potato Formula Cat food has been formulated based on our time-honored Pure & Simple philosophy: less is more! What makes it so special is not only what we put into the formula, it's also what we leave out that can make the difference to your special cat. Our singular attention to unique ingredient selection assures a simple and uncomplicated formula. Fresh wild-catch salmon and mackerel are used as the only animal protein sources in California Natural Salmon & Sweet Potato Formula and are a palatable source of Omega 3 fatty acids - especially DHA, for shiny coat, smooth skin and a healthy immune system.