These accurate, high quality rubber stamps of animal tracks are mounted on 3" x 4" wooden blocks with the image of the track engraved on the top of each block for quick identification. Acorn Naturalists animal track stamps feature all four paws separately (front right, front left, rear right, rear left). This allows for creating realistic track patterns (showing animals walking, running, bounding, sitting) which can't be done using just one track stamp. For some art projects where just the "idea" of a track is desired, a single track can suffice, but for teaching about animal track patterns, showing gait patterns and resting patterns, using all four animal track stamps (front right and left, rear right and left tracks) provides for much greater realism. Creative, hands-on tracking fun for ages 6-adult.