Hello! I adopted my Dutch shepherd mix almost a year ago, and something she's always done is randomly stop in the middle of licking someone or something. She'll be licking away, and then just pause with her tongue flat on whatever or whoever it is, and after about 3 seconds, starts back up like nothing happened. Her ears don't perk up or anything when this happens, she just totally freezes. Is this just a cute quirk or a cause for concern?