 Many amphibians catch their prey by flicking out an elongated tongue with a sticky tip and drawing it back into the mouth before seizing the item with their jaws . Some use inertial feeding to help them swallow the prey , repeatedly thrusting their head forward sharply causing the food to move backwards in their mouth by inertia . Most amphibians swallow their prey whole without much chewing so they possess voluminous stomachs . The short oesophagus is lined with cilia that help to move the food to the stomach and mucus produced by glands in the mouth and pharynx eases its passage . The enzyme <unk> produced in the stomach helps digest the chitinous cuticle of arthropod prey . 
