We have a duty to our Chihuahuas to teach them how to be comfortable and confident with strangers. Chihuahuas thrive on the attention of strangers once they feel confident with them, and it is our job as their family to teach them how.
It is best to teach your Chihuahua from puppyhood how to respond positively to strangers, but even if your little pup is grey in the muzzle or has come from an abusive or neglectful background, she can learn to take joy in meeting strangers or at least not respond by barking at them.
Teaching your Chihuahua not to bark at strangers will require plenty of her favorite treats and toys. It is helpful to have some dog loving, bark-tolerant strangers available as well. Practice in a variety of settings and with lots of different people. Make sure your chihuahua is wearing a sturdy harness that she cannot slip out of and that won’t hurt her if she pulls against it.
Barking, especially continuous, uncontrollable barking, is often paired with terrible anxiety and fear, as well as possible aggression. Be patient with your Chihuahua and appreciate how frightening meeting new people can be for her. Don’t push her to interact if she doesn’t want to. Doing so can result in aggression or even biting.