Ben Garrod uncovers the secrets of how vertebrates capture and devour their food using extreme jaws, bizarre teeth and specialised bony tools. He takes a cherry picker up a sperm whale's jaw and finds out which animal has teeth weighing five kilos each and which uses its skull as a suction pump. Ben gets his own skull scanned and 3D-printed to discover how diet in humans isn't just affecting our waistlines but is also changing the shape of our bones. Show less