I'm throwing my 2 cents in the ring, great tactics I would like to tag, #1 feed by hand, FOR AS LONG AS IT TAKES
#2 MAKE HIM EARN HIS FOOD, SIT, LAY, PAW
#3 GET HIM FIXED
#4 GET A MUZZLE FOR THE NEXT VET APPT. ( I need one for Jack, it's called panic aggression )
#5 USE "RESCUE REMEDY"
you may not solve every episode 100%, and you may have to put him in another room when company comes calling, but everyone living under your roof should feel safe with him.
I have this type of dog, he weighs 100 pounds of muscle, we love him very much, he isn't going anywhere, he's going on 9 years old, I got him when he was 13 weeks old, he was abused, he never forgot the fear of people, we were fired by a Dr. of canine psychology, phhsss tttt he took our 1000's of dollars and told us to get rid of our dog that no one could help us. He would lay down and not move, hump the trainer and wouldn't take steak from him.
Jack bit my finger the other day when I wouldn't stop putting medicine on his foot, he didn't like it, he warned me and I didn't stop. No puncture just a bruise, my point is you have gotten some good advice from peeps here. Get a thyroid test done and have him neutered. But get yourself a good muzzle just in case, and your next vet may appreciate it


