One woman’s dog had a sudden change in behavior that concerned her greatly. The dog went from being super active and enjoying daily life to just sitting and looking out that window constantly. At first, the dog’s owner figured the dog just wanted to go outside since animals love the great outdoors. But then the behavior did not stop and she got worried.

The owner decided to take action. Instead of running errands in the afternoon like usual, she stayed home to see what holding the dog’s attention. Soon, she realized that the dog was staring the neighbor’s house. And then in the window she could see a cat.

Watch the video to learn more about this dog’s new behavior and what’s causing it.

It seems the two pets had become friends from a distance.