I have had my new horse for around three weeks now. When he first arrived I put him in a little paddock alongside another field with three other horses in as I didn't want him to just be let straight in with the others and thought he could get to know them over the fence line. That first night he was very anxious running up and down the fence line constantly in the morning he had broken the fence and was in with the other three horses. He quickly established himself as herd leader and he was settling nicely I have been handling him on the ground and he's had his shoes removed and feet trimmed as he will be doing little road work through the winter. He is a very dominant horse and has tried to drag me when leading (He was owned previously by a young girl and I feel he has been allowed to get away with things like snatching for grass). I have established some manners with him but this last couple of days he has broken the fencing and jumped out into the yard even after repairing the fencing he has broken through again and again the last couple of days. I am going to try putting electric fencing up but if he is barging through wood will he just ignore the electric fencing? Also is this a respect issue in general, that he is not respective full of any kind of boundaries set? Or could this be him trying to settle in? All advice welcome as I can't keep replacing the fencing it's not my property. Oh and i've even contacted the previous owner and queries whether this is something he has done before and also contacted the owner previous to them and they have both said it has never happened before. He isn't hungry as he is on 24 hour turnout plus hay twice a day.