Despite many attempts over the 2 years we've not managed to be able to get our dog happy with grooming. This wasn't really a problem as he went to a groomer and we did what maintenance we could between visits. Now that we don't have a groomer we've been trying to keep him from matting but have failed miserably with his ears because he growls and mouths very quickly, even with treats. He's a show cocker spaniel so lots of ear! Any tips? One ear is really, really badly matted.