In the video, a person is seen holding a dog's ear and showing a tattoo on the inside of the ear. The tattoo consists of a series of letters and numbers. The person then explains that the tattoo was used to identify the dog in a laboratory. The video provides a close-up view of the tattoo, allowing viewers to see the details of the ink. The person's hands are steady as they hold the dog's ear, and the dog appears calm throughout the video. The background is blurred, but it seems to be an indoor setting. The video is shot in high-definition, and the colors are vibrant, with the dog's fur appearing soft and the tattoo ink standing out against the skin.