"knock down, drag out" - Taunts delivered from a safe distance, then the Pronghorn gauntlet is thrown! But when it came time to actually make good on his threats, this hefty challenger (left) was no match for the reigning champion. Stud rights stay in-house for yet another season, and the younger buck limped off to lick his wounds and plot next year's revenge.Yellowstone River uplands near Tower; Yellowstone National Park