My room mate has a 6 month old chiwawa that barks constantly. The animal is completely dependant on his owner, my room mate, and never leaves her side. It was sick as an even younger puppy so constant care was necessary. The dog is completely terrified of anyone besides his owner, and barks at everyone as long as its owner is there. He is not neutered. Tried disciplining with squirt guns, and yelling at it. Didn't even slow him down. We take him for daily walks, and he plays some, but he still has too much energy and is bored. The only day it didn't bark was when he was too tired from not napping at all. Any advice besides killing it and telling my room mate he ran away?