My brother and sister in law have purchased a lovely quiet QH gelding, five weeks ago. He is bringing a lot of confidence to his young rider. But, a couple of weeks ago, the agistment alerted us ( because we live close) to come out and check him because he looked like he was "choking" in the paddock. But he wasn't. Puzzling. Then he did it again a few days later in the stable with all of us there. He wanted to chew wood and was prevented, then stretched his head out low and repetitively was opening his mouth. When I came along, snapping a carrot into two, he immediately stopped and stood to attention. The behaviour did not return that day. We are getting a vet out to do teeth to clear that, but what do stockies think? We think it may be a habit when he is stressed or bored. Of course, the previous owners made no mention of this habit (if that is what it is) when selling him. They are also not returning calls. (Not sure why, we are only asking to meet to get the registration papers, they have their money and we already receipt end the sale).