I agree hal. When I heard it was a ritual battle I wondered if it wasn't also a behavior that served another purpose. Dogs, after all, even females, exhibit a certain behavior (I can't think of a polite way to say it...it rhymes with bumping...) to express dominance that is also a process in the act of reproduction, so why not? In fact, some human language also has a double meaning. I was amazed in Florida that they have signs in remote parking lots where nobody would be speeding anyway but teenagers might go to be alone together, and it doesn't say "Speed Bump". It's a crazy world.
https://www.google.com/search?q=speed+h ... uICh2RKgFBz