sentence: Turtles use their jaws to cut and chew food.
sentences_before: Turtles have a hard beak.
sentences_after: Instead of teeth, the upper and lower jaws of the turtle are covered by horny ridges. Carnivorous turtles usually have knife-sharp ridges for slicing through their prey. Herbivorous turtles have serrated-edged ridges that help them cut through tough plants. Turtles use their tongues to swallow food, but they cannot, unlike most reptiles, stick out their tongues to catch food.
concept_name: turtle
headings: Turtle Anatomy Feeding
categories: Living fossils