This is a video I took several years ago. I posted it awhile ago as well but for any new people who haven't seen it, here it is. It's two male Water Moccasin's fighting over a female, I filmed them in the Austin area doing Memorial Weekend something like 4 years ago. One of my favorite videos.

http://jareddavidsonphotography.blogspot.com/2014/10/two-water-moccasins-fighting.html