I've had my mini for quite some time and he was boarded with a friend of mine, last summer I finally acquired some land and was able to have him on my property, I also purchased a quarter horse. They had never met prior to this but it off amazingly well. And up until about a month ago everything had been fine.
My mini has taken to running around like a mad horse when I enter their pasture during feeding time. Granted, he has always been rambunctious but not to this degree. He has suddenly taken to invading my space, though moves away when corrected/prompted to do so. He has also become a biter. Also, when just petting him he pushes his head against whoever is near and lifts his upper lip to reveal his teeth, which again, is promptly corrected. However the corrections are wearing off, he expects the pop on the nose and snaps his head up before I even have a chance to execute it.
I'm sure this is the result of boredom. I am a student with a job and I admit to not being able to take him out everyday, but he is groomed and walked no less then four times a week, and my housemates also pay much attention to him when I'm not around. I know I am most likely a mother in denial of her 'son's' declining behavior, but this really did seem to happen over night.
My house mates had been notorious for spoiling him with treats, but I had put a firm end to that a while ago, and I thought perhaps his feed amounts were contributing to his behavior.
I am going to be working to restore not only his respect for my/others space but reestablish our bond, does anyone have any suggestions or input on some good ways to go about doing this? I'm aware all things take time, and I have devoted myself to make it as my horses are worth it, but I would love second opinions, you can never have too many good ideas! :)