OMG, this sounds like a family member of mines dog. Although its a CHI. Family has done the same thing to this dog. ITs 5 years old, eats nothing but cooked chicken, hates everyone but_______. Growls and barks at all others. Its quite annoying and has made everyone else in the family sort of despise the situation, espcially when we have to take care of her when____is checked out,lol, won't go into detail, . You have a most difficult situation to handle here.
You can bring IT some chicken or just try and mentally disengage from ordeal. You sound like you've been quite patient so far with trying different things. Its sad for the little guy that his master/owner will not take charge of him. His health and well being is suffering for it. You don't have to have a education to raise children or pets.Its funny to watch people who have a hard time setting boundaries for themselves,can't set them for their pets either. They feel like boundaries cause suffering when they really for safety and structure. Oh well.... Good luck.