Customer with 3 yo Greater Swiss Mtn dog is worried dog might bite someone over a possession it is guarding.
Dog will pick up an object like a sock, that could be dangerous and show signs of aggression when the owner approaches to take it away. Dog begins showing reactions (according to customer) at about 4 feet.
Customer is a large gentleman with a bad ankle, not at all agile.
Dog has been through a local obedience program that I happen to know is done with a choke chain and a pat on the head. Dog is not wearing choke chain and owner believes that training may have triggered this issue.
Dog's is overweight and food bowl is in the kitchen, half full at 11 am. Dog shows little interest in food rewards.
Dog positions itself between trainer and owner and moves when with trainer to maintain it's position. Dog isn't particularly nervous but shows nervous symptoms when trainer approaches owner (mouth closes, tongue exposed). Dog does not act aggressively in this position but is obviously saying "leave me alone".
Dog sleeps in owner's bed nightly, no crate in sight.
Owner claims to have tried trading food for dangerous items and failed.
What's your analysis and plan of attack?
Remember, you need to solve this problem quickly before a family member gets bitten.