Most natural type dogs and their breeds are quite efficient with food. Many thrive on a natural diet – such as a complete biologically appropriate raw diet.
If fed kibble, its best to go for a high protein, low carbohydrate brand and grain free is usually advised.
Natural chews such as deer antler, bull horn, dehydrated meats and raw non weight bearing bones etc. are important for both physical and behavioural welfare (E.g., as teeth cleaners, a source of calcium, boredom breakers/stress relievers by mastication.)