The initial signs of a problem may be subtle and unseen if you do not know what to look for. This dog is doing a great deal of Lip licking, ears back, whites of the eyes, closed mouth and "fidgeting." He absolutely gave warning that this was uncomfortable and to not continue to engage. All of these along with his posture overall (leaning away) ... are the signs DOGS USE time and time again before they bite. We as people living with dogs must become more aware of how our furry family members communicate so that we recognize stress and conflict and do not invite the bite.