In the video, a dog is seen lying on the floor in front of a sliding glass door. The dog is looking out the door, and a person walks up to the door and opens it. The dog then looks at the person and follows them inside. The video captures the dog's curiosity and interest in the person entering the room. The dog's coat is brown and white, and it appears to be a medium-sized breed. The sliding glass door leads to a backyard with a green lawn. The person entering the room is wearing dark clothing, and only their lower half is visible in the video.