In the video, a dog is seen walking through a doorway. The dog appears to be a medium-sized breed with a black and white coat. The doorway is made of glass with a black frame, and the floor is tiled. The dog walks through the doorway, and its reflection can be seen in the glass. The dog's tail is wagging, indicating that it is happy or excited. The lighting in the room is dim, and there are no other visible objects or people in the video.