A tail wag does not = a friendly dog. Almost every story of a dog biting someone they also preface it with, but he was wagging his tail! The tail wag simply means that your dog has energy, but there is so much to learn about the way in which they wag. Is it loose and a nice sway, or big helicopter loop. That’s almost a guarantee the dog is friendly. If it’s a low slooping tail wag, that is a dog who is nervous and unsure, or being submissive to another. Straight up is the middle finger of the do