We've seen all kinds of wild animals fighting over the years; bears, lions, tigers - take your pick. But here's something you don't see every day ... two male giraffes throwing down in the middle of the Kalahari desert. Why do you think they're fighting? It's over a female giraffe, what else? In all seriousness, these guys aren't playing around. The way they whip their necks around and use their small horns is absolutely incredible.