I was wondering this question last night.
I was stroking Pippi's head and she was licking her lips...which going off some posts Ive seen here means she is uncomfortable. But, when I would stop, she would shove herhead back under my hand for more, and resume lip licking.
And Ive also seen it posted, that dogs will lick lips when anxious, yet a way to calm them is to lick their lips??? Isnt that just sending them anxious messages?
Interested in responses here just for curiousitys sake...