Hi there, Hopefully I can find someone who can associate with this issue. We noticed our 14 month old yellow labs mouth quivering yesterday morning. It would do this for about 10-20 seconds then stop and this would happen usually after eating or drinking. The first thought that came in our minds was the bumble bee nest in the back yard. He has along with his older brother snapped at these flying curiosities and we think he might have caught one resulting with an internal sting either at the back of the mouth or tongue. Can anyone relate to this? Or could this quiver be something else more serious? Thanks In Advance.