Pathfinder Battles Deep Cuts: Pachycephalosaurus

This normally peaceful herbivore sports a remarkable dome-shaped head surrounded by a crown of knotty horns that it uses to defend its herd when threatened. But come mating season, competition between Pachycephalosaurus males really comes to a head! Rival suitors gleefully slam their bony heads against one another like battering rams in an effort to impress their ladies.
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