I have never had LA but some things should be the same. Give him a treat every time he comes for a while. You can gradually phase them out. I would give him a jackpot treat [large numbre of treats at one time while phasing out treats. Keep giving an occasional jackpot after regular treats are phased out. You what him to think that there is always a possible reward. Startle response while sleeping is not unusual. He may or may not get over it. As long as he's not harming the cats I would not worry unless it bothers the cats a lot. Diane C