Last evening I was in the barn with him and I decided to go into his stall and brush him down. So I did. While I was brushing him I was just starting to brush his kneck/chest area and he "looked" annoyed. I don't know how to explain it ... he just looked annoyed. I could pick up on it easily. But I just sang lightly to him and kept brushing. Next thing he does is LUNGES his Head towards me "trying" to bite me. I don't know if it was just a warning or if he really tried to bite. I jerked away and said "GEORGE NO!" and pointed towards him acting like the big boss - so he doesn't think he can take advantage of me like that.
So then today I was down there just for an afternoon visit with him and my mother in law was here checking him out. He was nice as could be to us. We weren't brushing him - but we were petting his head/face and kneck. He didn't act at all like he did last evening. So I figured he was just in a mood last evening or something. Well then this evening when I was in the barn after I watered him and gave him more hay I stood there at his stall door and talked to him. Once again he acted annoyed by me and again he "sorta" bit at me. Not as much as the previous evening ... but still ... HE DID IT. That made me mad and hurt my feelings ... so I gave him a little slap (just a tap to let him know that I'm the boss ... not him) and said NO. I hated doing that because I have no idea what all he's been through and how he was treated in his past, and I don't want him to ever fear me. I want him to trust me. But on the other hand I also don't want him to think he can just push me around!
Why is he doing this and how do I stop him ? I want him to learn to trust me AND to respect me at the same time. HELP PLEASE !