The video shows a white mouse with a long tail inside a glass enclosure. The mouse is standing on its hind legs and appears to be sniffing or nibbling at a rattlesnake. The snake is lying on the ground, and its body is partially visible. The enclosure has a dirt floor covered with straw, and there is a blue water dish in the corner. The mouse moves around the enclosure, occasionally stopping to sniff the snake. The video is shot from outside the enclosure, and the camera is slightly shaky.