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When it is mating season for the Arrhinoceratops, the male attempts to win the female and rival the male leader of the herd. Learn more in this clip from Discovery Channel's, "When Dinosaurs Roamed... (more info)

When it is mating season for the Arrhinoceratops, the male attempts to win the female and rival the male leader of the herd. Learn more in this clip from Discovery Channel's, "When Dinosaurs Roamed America."

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