Wysong Synorgon Canine Formula Dry Dog Food A Natural, No-Nonsense, Proven Pet Food For Dogs Simple Recipe Based Around Chicken And Brown Rice. Full Spectrum Of Nutrients, Probiotics, And Enzymes Fed To Thousands Of Dogs Through Multiple Generations With Great Results Nutritional Formula Meets Your Pup'S Basic Needs. Ideal For Dogs Of Any Size Or Breed Wysong Has Been A Leader In Pet Nutrition Since 1979