✔ 最佳答案
Just get on top of it now so that you get him out of the habit.
Just watch him like a hawk especially as at that young he is probably onlead most of the time. He should only be out on a walk for about 20 mins a day at his age anyway so it isn't long to watch him.
To be honest I HATE THIS.... really one of my CAN'T STAND habits and so I do freak out at them a bit when they do this and really let them know vocally that I am not happy.
They usually stop if you keep up the attitude with them.