He attacked himself in rage? Wow that is nuts. I visited my friend who has Monty and took him out to hold him. My friends dog walked by, keep in mind Monty is less than 2k grams still, Monty constricts my arm as tight as he can and goes in full attack mode at anything that moves. I had to be careful to remove him from my arm and get him back in his enclosure. He even bit the stick I used to keep him from attacking me. They think they are 10 feet tall sometimes.