In the video, a person is seen holding a small bottle of liquid and applying it to a dog's teeth. The dog is lying down on a colorful blanket and appears to be relaxed. The person uses their fingers to gently hold the dog's mouth open and apply the liquid to the dog's teeth. The dog seems to be enjoying the process, as it does not show any signs of discomfort or resistance. The person's actions are careful and precise, ensuring that the liquid is applied evenly to all the dog's teeth. The video provides a close-up view of the process, allowing viewers to see the details of the application and the dog's reactions.