Keywords: Pituophis, Pituophis, Sonoran, affinis, bull, car, carcass, carcasses, cars, catenifer, catenifer, collision, collisions, crash, crashes, dead, death, deaths, ecology, gopher, gopher, highway, highways, illustration, illustrations, image, images, mortalities, mortality, photo, photos, reptile, reptiles, road, road, roadkill, roadkilled, roads, serpent, snake, snake, snake, snake, traffic, vehicle, vehicles, victim, victims, wildlife