Thank you all so much for your encouragement. I have read the Cesar Milan books, walk ahead of him outside, make him sit for food. You guys have Yorkies, you know how incorrigible they can be. He was born like this. He was the runt of his litter and he was bullying them when I met him. At the time, I thought it was irresistable, but I'm not embellishing, he locks his jaws onto my Poodle when he attacks him. I pull him and it would literally pull my 8 lb Poodle off the ground. I have to pry his jaws off. He is just a little gangster. His best friend is a Rottweiler named Capone (and he dominates him).
Cosmo is my heart, but I suck at being his leader. It's almost like owning a fighting breed where everyday is battle of the will (and bladder). He's like crack though, I know he's bad for me, but I just put the pipe down.
I will try the belly band.