Hiya, Can any give me any tips to stop my 17month old Shi Tzu from barking. If someone she doesn't know knocks on the door or comes in the house, she won't stop barking, even if I tell her it's ok, or to be quiet. If i move her upstairs it makes her worse. I tried getting the people to give her a biscuit, but she wouldn.t take it or stop barking! She barks at anyone she walks past on her walks, or if she is in other people's houses she even barks at them then.