I have a teething one month pitbull that keeps nipping and biting my ankles which is painful. I managed to somewhat get him to lick my hands now instead of biting it gradually, but he's not learning to not bite my ankle. I use the "NO!" approach, but he never lets go, so instead I use two shoes and slap them together while he's biting me and he lets go. I just wanna know if my method is ok(I'm all about positive reinforcement) and or if they are other methods that work for you guys.