i was wondering how to keep german shepherds food motivated to dry kibble? would there be any additives that i can put in my kibble that would keep them food motivated and hold a descent weight? i follow the food charts on my dogs and they always seem to leave alittle to majority left. and it freaks me out. i've seen rice added and also veggies. would anyone know the ratio of additives to the kibble per dog? thank you and hope to hear from you all.