I have always heard that dogs no not recognize themselves in a mirror. Neon certainly doesn't react to one, even when I'm holding him up and cooing "Who's that boy in the mirror? Who's that little dog?" He mostly just looks embarassed. But last night he saw himself reflected in the glass doors of the fireplace, and he was transfixed. He couldn't go all the way up to the doors, since we have decorations up, but he kept staring at himself and walking around to see if the other dog was doing it too. Why would he react to one reflection of himself but not another? Could it be because the reflection in the glass was less distinct?