Snails have distinctive teeth called radulae or radulas, which range from a few to thousands. The radula is unique to mollusks such as snails, making these one-piece shell carriers the animals with the greatest number of teeth.
Radulae, which are tough, ribbon-like organs that are comparable to tongues in appearance, contain numerous, almost identical rows of miniature teeth. Snails use their radulae to grind, grate and tear their food. New ones replace the teeth that wear away over time.
The animal with the next highest number of teeth is the spinner dolphin. It has 45 to 65 sharp, pointed teeth on both sides of the upper and lower jaws.