I have a three year old mustang mare that we bought at a horse auction last march. I've saddled her a dozen or so times over the past year, and am considering sending her to a trainer to really be trained (it's amazing how whe you tell people you're looking for a trainer that suddenly everyone is a horse trainer.) Anyways, my dad is the one who does most of the feeding the horses. The mustang, named "Reba" really loves him. He gives her treats and pets her and messes with her just like a big dog. I've petted her, fed her, saddled and bridled her (and put up with the panic, rage and rearing that comes with that) and she's never given me any problems, and I've never been afraid of her. Today, when my dad and I went in the pen, she went over to him and let him pet her and rub her, and then I reached to pet her and she barred her teeth at me! I got scared- I backed up (I know I shouldn't have, but I did) then, later I went to pet her, she seemed fine, didn't pin or ears back or anything and then wehn I turned around to walk away, she BIT me! I turned around and yelled no and tried to slap her, and she tried to wheel and kick me! WHAT IS THIS ALL ABOUT?! I figure she's telling me she's the herd boss. I want to be dominant, and especially try not to be afraid, but how do I do that when 1000 LBS of horse will kick me?! Suggestions for showing her who's boss without ending up in the hospital!?