In the video, a person is seen holding a horse's mouth open with one hand while using a brush in the other hand to clean the horse's teeth. The horse appears to be calm and cooperative as the person carefully brushes each tooth. The person's movements are deliberate and gentle, ensuring that the horse remains comfortable throughout the process. The horse's teeth are visible, and the person takes care to clean each one thoroughly. The video provides a close-up view of the process, allowing viewers to see the details of the brushing technique and the horse's reactions. Overall, the video showcases the importance of dental care for horses and the gentle approach that should be taken when performing such procedures.