These life-size animal track replicas are individually cast using flexible vinyl. Use for sand tracking games (glue replicas to blocks of wood using vinyl glue and stamp tracks into sand boxes) or bring into the field to compare tracks or make prints. These accurate casts from museum specimens show every skin fold, claw or scale. These are wonderful hands-on tools for teaching anatomy, adaptations, behavior, ecology or tracking skills. Use TSP (available at any hardware store) to clean occasionally. Frog, turtle and mammal replicas are offered in sets featuring one back and one front foot unless noted as ea, in which case only one foot is included (all birds, some mammals).