In the video, a person is seen holding a dog's mouth open with one hand while using a tool to clean the dog's teeth with the other hand. The person appears to be a veterinarian or a dental hygienist, as they are wearing a white coat and gloves. The dog is lying down on a table, and the person is using a specialized tool to remove tartar and plaque from the dog's teeth. The dog seems calm and cooperative throughout the procedure. The video provides a close-up view of the dental cleaning process, highlighting the importance of regular dental care for pets.