I've recently started taking my dogs on walks again which is pretty awesome because for a long time he was never good on walks. He's a big, 110 lb. yellow lab named Max. Last year he was attacked by a pitbull outside our house and he hasn't been the same since. Every time he'd see a dog or person go by our sidewalk or just drive by he would go off like and alarm. We tried countless things to help him get over it. We even hired a canine therapist! LOL! Finally we found something that works, a shock collar. It works perfectly and finally he's able to behave on walks. The collar does both shock and noise and we rarely have to use the noise now. He's actually able to go on walks now without going off at every little thing. Something I noticed about him that's coming back though is that he's getting blisters again on the pads of one of his paws. Where I live, it's basically impossible to go on a long walk somewhere without having to stay on mostly concrete. Do you guys have any suggestions on what to do?