I hate to brag but my luci is not a barker.Not even when the door bell ring's. When service people come 's she does not bark at them either. She just follow's them around. I am so thankful she has not followed her2 chihuahua's sister's barking habit's. At first we thought she might be deaf but she come's when I call her or she hear's the clicker.The only time she bark's is when one of the other one take's her toy's or treat, just to get my attention. She is a little tattle tale though. Yorkies you have to love them they all have different personality's. I never thought I could love a little fur butt that much. I am so proud of her.