Barking Mirror

While waiting for my clients to arrive, I went to the balcony, got our little puppy dog and spent some quality time. It’s a bit dark so I turned on the light, and a strange thing happened. Suddenly, my dog starts barking, and he doesn’t usually bark. So, I got up the chair and tried to see what our dog is barking at. He was facing the living room behind a glass door. I looked but nobody’s there. After staring at quite some time where the dog is looking, I’ve noticed that his reflection is showing up on the glass door, so literally, “He’s barking at his own mirror.”