When I scratch Lady in a particular spot near the base of her tail, she starts wagging her tail and licking the air. I'm aware that repetitive lip licking can be a sign of submission, anxiety, and pain, but I'm confused because neither she, nor my lab growing up, who did the same thing when scratched in the same spot, seem to be showing any of those signs. In fact, when I stop, Lady looks at me and then at her tail as if to say, "hello? why'd you stop?" She's a submissive dog in general, however, when I do something she doesn't like (i.e., touch her feet), she gives pretty strong signals (like getting up and sitting away from me, with all four feet hidden from view). Has anyone else seen this behavior in their dogs?