I just got a new horse,he is a 5 Y/O OTTB/Former Hunt Horse,he is the sweetest horse to ride and be around,great manners in the barn and his stall.We first turned him out alone and my other two horses in the field next to him,they fought a little bit and then it seemed like they were getting along great I did this for 2 days. I have a 6y/o OTTB and a 13Y/O ottb.I opened the gates between the two fields today,and they were fine untill about 5 hours later,all of a sudden Crew my 5 year old,is scared to death of Pete(the 13 year old.) he wont even go near him,Pete hasnt done anything to him and the mare just stands there,he was running around the entire field working himself in a lather today.Pete was in the feild and he woudnt even go near the fence!! Can anyone help me out here before tomorrow?! I let him in the stall after we cooled down,and he acted like nothing happenend. This horse is so much better then this,and I have no idea whats going on.