#hound sharks

Though most sharks sport a characteristic toothy grin, not all species can flash a set of pearly whites. The leopard shark, which is primarily a bottom-feeder that predates on clams and crustaceans, has overlapping ridges between different tooth rows, which creates a flatter ridged surface that they can use to crush their prey with.

(Image: A leopard shark (Triakis semifasciata) being released as part of a study, by Kyle McBurnie