I've been feeding my very picky eater dry food (which has been grounded, because that's the only way she will eat it) mixed with canned. Is it okay to feed just canned? I've heard that just feeding canned isn't good for a dog's teeth. However, my dog's not really getting the benefits of the dry food to clean her teeth because it's grounded into crumbs. Please tell me your views on the subject because I was thinking of just giving her canned. Thanks.