Syringe T e green bush viper uses its teeth like needles. It has long, hinged fangs. Snake fangs are specialized teeth that are hollow. T ey work like the needle a doctor uses to give a person a shot. When not in use, a viper’s fangs fold up


and lie against the roof of its mouth. But when the viper strikes, it opens its mouth, and the fangs snap forward into place. A bite triggers venom to shoot down


from glands behind the viper’s eyes. T e venom moves through the fangs into the prey. It then destroys cells and causes uncontrolled bleeding. Within minutes, the prey is dead, and the viper gobbles it up.


Scalpel T e great white shark uses its teeth like scalpels, or knife blades. T ey are serrated like a saw and cut through prey. Like all sharks, the great white’s upper and lower jaws can move. When the shark ambushes its prey, it attacks by biting with the lower jaw, then with the upper jaw. It shakes its head back and forth tearing off large pieces of meat and swallowing them whole. T ese sharks oſt en lose their teeth. T ey


break off or get stuck in prey. It’s not a worry for the great white, though. Its teeth are arranged in neat rows like a conveyor belt. When a tooth is lost, a new tooth can move forward to replace it the same day.


Syringe


Scalpel ADVENTURER 5


cher


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