Plato Smart Dog Treats are some of the best all natural treats on the market today. The below features show just how great the Plato Treats are: Over 90% Natural ingredients, fortified with antioxidant vitamins, proteinated zinc, and glucosamine. No artificial colors, flavors, synthetic preservatives, or GMO's (genetically modified organisms). Naturally preserved. Antioxidant vitamins E and C. No meat by-products or meals. Fortified with Zinc Proteinate. Three flavors below.