This is Heliocopris dominus. Something about those 'Sacred Scarab and Dung Beetles' ...After finally finding a fairly fresh pile of manure from large grazing animals, these big scarabs shape it into a ball and then they stand behind it and push... and push... and that ball gets bigger and harder and it just might end up bigger than your fist! The 'Dominus' male, has a very large protruding pointed thoracic horn. The female does not.