If you are in Wyoming, you know this is the time of year where the pronghorn antelope gather in herds and migrate. Bucks round up the ladies into the biggest group they can manage to hold together, and young bucks try to peel off a lady here and there - only to be chased away by the older, more experienced males.

This is when we get to see these majestic animals run, as they chase each other at their full 55mph. Pronghorn antelope are the fastest land animal in North America.

But now and then the challenge over a female is met, and the battle is on. Here are some of the best horn-to-horn battles we could find...

ROUND 1

ROUND 2

ROUND 3

ROUND 4

AND THE WINNER IS...