Article about Triceratops' horns and their purpose. Triceratops had a sharp horn growing above each eye and a smaller horn growing in the center of its nose. Scientists wonder whether these dinosaurs used their headgear to recognize each other, to fight off predators, or to do a different kind of battle.

Originally released by Highlights for Children, 2015. Streaming audio file encoded with permission for digital streaming by Infobase on July 15, 2016.

Dueling Dinosaurs: Highlights (3:20); .