In the video, a woman is seen putting a harness on a dog. The harness is purple and black in color. The woman is holding the dog's front legs and putting the harness on the dog's back. She then adjusts the straps of the harness to fit the dog comfortably. The dog appears to be calm and cooperative throughout the process. The woman's actions are gentle and careful, ensuring that the harness fits the dog properly. The video provides a clear demonstration of how to properly fit a harness on a dog.