http://www.yorkietalk.com/forums/yor...d-trachea.html
here are three videos comparing three things
I have an allergy dog and they can do this from allergies but mine does not do it that much and she has horrible allergies.
did you notice it just recently or has this been happening for a long time?
Can you post a video of it from your camera as that may help
sometimes if a dog is put under and they do not use a tiny tube like a cat tube or smaller it can cause ct and since you stated your baby had some tests run that would be my concern if it happened after that and was not a seasonal thing and sounds like a goose honking noise