I have a 16 month old colt that has started nipping a little. He seems to be teething and is worse with the nipping some days than others. He has things to chew on to help his teeth but I would like to dicipline him when he decides to bite me instead. I don't really what to go down the road of hitting a horse to stop them but I use a pressure halter on him and use this to dicipline him. I do not want him to become head shy, does anyone have any suggestions please? Or advice?