I've been riding since September. Usually, I ride a white gelding named Blue. He bites when I groom him, when I do up his girth, refuses to pick up his feet, and outright distrespects me. At first, he never did this. Now he does it everytime I come near him. I'm nervous to go anywhere near his head, even cross-tieing. Now, I would ask to ride another horse, but Blue is the only lesson horse that can jump, and that's what I'm training to do. However, he's an absolute angel in the saddle. How do I show him that I'm the leader?
(PS. My instructor and the owner of the stable both know how much of a pain Blue is. They trust that I can handle him- which I can, normally, when he isn't biting.)