I am new to learning dog behavior and signals. This poster posted this on youtube to show his dogs are okay around children. His dogs are trained in protection. However when my dog would lick his lips around children that are running around my trainer said he was anxious or nervous. Am I right to think this dog is giving off nervous energy? Why wouldnt a professional see this? Or am I wrong and there are other body signals showing this dog is okay and fine with whats going on Id like to know so I can assess my dogs anxiety better.