I have a beautiful Chi called Candy, but she is driving us nuts with barking. She a lovely little dog and is very good until the door bell rings or someone comes into the house, then she goes into a frenzy of barking and nothing we say or do gets through, if by chance she stops the minute they move it starts her of again. Taking her for a walk is a nightmare as she barks and lunges at everyone we pass. I have tried various things to alter this behaviour but so far nothing has worked. If anyone has any suggestions of how to stop this I would be very grateful.