About a year ago, my parents rescued Moose. At the time, we thought he was older than he was. Turns out, he was a VERY large puppy. Of course, he was hyper and excited, but since has not calmed down....at all! He was neutered. He has some good days, but the bad days are terrible. He finally got the house training down, but he still gets over excited and has separation anxiety with a tendencies to destroy things. They also have a 6 year old Jack and Pit Bull mix female. She is a sweetheart, but only takes so much of Moose's antics. I am not sure if it's playing that goes too far or if it's a dominance thing. He is caged when no one is home, but he lunges at visitors coming through the door and just takes forever to calm down. They are using a shock collar mainly because of his sheer size. We know he needs more exercise, but being over 100lbs already and not good on a leash, that is virtually impossible. They also use calming treats...sometimes they help, other times, you wouldn't know it. They really, really don't want to re-home him and if need be, it would be a good home, but they really do love him...I am sure some of the behaviors might be outgrown, but the aggression things scares them. Any thoughts would be appreciated!