The puppy saw her reflection on the fireplace glass door today. She must have stood there observing it for at least an hour. She would back up and sit next to her sister for a while and go back to show Simba this strange dog. What I found strange is that she has seen her reflection in my full length mirror. She stops for a couple of seconds and then realizes she can see me in the mirror too. She’ll turn back and forth a couple of times and leave it that. But the image on the glass had her really perplexed. Maybe it was because this image was translucent. It was fun to watch.