My friend's horse is extremely stressful all the time. He is anxious and constantly cribs and/or tongue chews even when in the field with pasture mates with fresh hay and round bales. He cribs through a traditional as well as a leather cribbing collar and gives himself rubs. Cribbing supplements haven't worked either. He is 19 and semi-retired, in a stall at night and out during the day.
Are there any suggestions on what to use to keep him from stressing everything? He is a rescue off the track and she has had him for about 5 years now but every time the weather changes, it rains, anything - he gets stressed and drops weight and fidgets. Even when things are consistent he is fidgety and stressed and is an extremely hard keeper.
He is currently on supps for ulcers as well as joint and hoof. Any thoughts? He is not flighty or spooky - just stressed even when not in regular work.