My dog's living room bed sits right in front of the TV stand. The stand is wood with a glass door. It isn't very tall.
I noticed for some time that Misha would look in the glass. Sometimes she would walk up to it and look at the reflection. Other times when she is laying in her bed she would turn to look in it.
For the longest time, I thought she was looking at herself. Maybe trying to figure out who that other dog was inside the box was. Then, it dawned on me. She was looking at us!
She can be very nosy. She often comes into the room if she hears my Mom and me talking. I noticed that when Misha would look in the glass it was when either we'd been talking or she had been asleep and she was sure if we were still there.
I know she can see me. I will wave and she will move her head. Sometimes she'll turn around and look directly at me. She doesn't wave back though.
Have you ever found your dog looking surreptitiously like this? Do you have a spy like Misha?