My dog is a seven-month old, unspayed female. About three days ago, she started to look out my French door for very long period. She will whine sometimes too. At first, I thought she wanted to go out. So I opened the door for her. All she did was going to the other side of door and staring back from the outside. I later realized that she was staring at her own reflection. She will also sniff at her image and lick the glass. She can do this for hours and in the early morning, she’d do this instead of greeting people or begging for food. This all started three days ago. This behavior change is unusual. When she first came to my home at age of four months, she was startled to see her reflection via the same French door. She’d bark at it but she quickly lost interest. Not sure she realized it’s her own image or not. But she basically ignored the reflection until three days ago. She also never shows even the slighted interest to her image in any mirror, even now. She only looks at the blurry reflection through the French door. I’m not sure whether this means she’s about to get in heat. She’s unspayed as I will have her fixed after her first heat due to her inverted vulva. I checked her private part. It’s not swollen and looks normal. Does anyone have a clue what is going on?