When I scratch my gelding's back, he turns and 'scratches' mine. He is a very respectful horse on the ground and in the saddle. Some people, however, tell me that this is 'disrespectful' behavior. I don't think it is. He isn't biting me at all. He is just rubbing his muzzle on my back and hip while I scratch his whithers. Otherwise, he doesn't get in my space. What do you guys think?