In the video, a person is seen holding a horse's mouth open with a tool. The person is wearing a glove on one hand and is using a tool to clean the horse's teeth. The horse seems to be calm and cooperative. The person is carefully examining the horse's teeth and cleaning them with the tool. The horse's mouth is open wide, and its teeth are visible. The person is wearing a glove on one hand, indicating that they are taking precautions to protect themselves from the horse's teeth. The tool used for cleaning the teeth is metallic and appears to be specifically designed for this purpose. The person is using a gentle and precise motion to clean the teeth, ensuring that they do not cause any discomfort to the horse. The video provides a close-up view of the process, allowing the viewer to see the details of the horse's teeth and the tool used for cleaning.