I've encountered a new situation and am looking for advice. My 5 year old gelding is starting a new habit of rearing when I want him to stand still. He's not getting much height however I want to get this sorted out before it gets serious.
I have lounged him and he stops and stands well. The same in the round pen. He likes open spaces and loves to run. I've had him for about six months and all his previous training and experience has been in riding arenas, whereas I take him out into open fields and trails. On trails he's excellent and at times cautious. In the open he's impatient to run. Thoughts.....