Our new dog is still confused by the sliding mirrors on our closets. I likes the dog in the mirror and he licks the other dog. The mirrors were at 90 degrees and he saw several dogs. It’s a lot to process for him. He’s only barked twice. He heard or saw something in the back yard and let out a hell of a bark. The second time I noticed he saw his reflection in the sliding glass door against the dark of night. He likes the dog in the mirror but not the one in the dark of night in his back yard. If he ever barks at a person I think they will need fresh underwear. He makes snoring sounds when he’s super happy.