Researchers find iron coating on Komodo dragon teeth aids in maintaining sharpness for tearing prey.

Researchers from King's College London discovered that Komodo dragon teeth are coated with iron, which helps maintain their sharpness for tearing and ripping prey. The iron coating, concentrated along the cutting edges and tips, keeps the serrated edges of their teeth sharp. This finding could provide insight into how meat-eating dinosaurs, such as Tyrannosaurus rex, killed and ate their prey.