[YorkieMother]

I suggest that you do the opposite, you have been making loud sounds and trying to sh him. HE in his brain maybe thinking you are joining him and he is right to bark.So go very quite and see what happens.

As far as giving up goes , I understand it not easy having an out of control dog and not know what to do and want to do the best for him.
Frankly biters are scary so I get it. Having a wild fur child of my own I get it and there is no magic cure and no person that can ride in in his black jeep with a wrong way to train that can fix this in a heart best.
You will need to make a choice see a vet with behaviour training or a PHD behaviourist get an assesment and a program get your nieghbours on board to help and get to work or place in rescue. But you need to see someon that understand what is looks like genetic aggression and fear along with some learned stuff.

best of luck and I do understand as I said I have a brat fur kid here and life can be tough but those great days are wonderful to have.

JL