In the video, a small brown rat is seen standing on a person's arm. The person is wearing a black t-shirt with white writing. The rat is moving around on the person's arm, and the person is petting it. The rat appears to be comfortable and at ease with the person. The background is not clearly visible, but it seems to be an indoor setting. The rat's fur is smooth and shiny, and it has a small, pointed snout and large, round eyes. The person's arm is steady, and they seem to be enjoying the interaction with the rat.