Ive seen that one before. I think its great that you posted it. Most people dont realize that male Iguanas get sexually frustrated, which turns into breeding season aggression and that can get pretty nasty. I havent had the experience myself yet, though my male Ig Angus went throughhis first breeding season last year. It was a very mild season, but it doesnt mean it wont change over time.
BTW are you by chance a fan of Fear and loathing in Las Vegas?