Duke's Din-Din WITH DUCK, SWEET POTATOES, CARROTS, GREEN PEAS & APPLES Earthborn Holistic Duke's Din-Din canned formula with Duck is an excellent source of high quality protein for puppies and dogs. This grain-free dinner consists of wholesome vegetables and fruits like carrots, green peas and apples. This recipe also includes nutrient-rich sweet potatoes as an exceptional source of vitamins, minerals and beta-carotene which help maintain your dog's immune system.