anatomically_correctanatomically_correct_anusanusbestialitybig_anusbig_buttbrown_bodybrown_skinbuttbutt_grabconditional_dnpdock_(anatomy)dreamworksduoekayasequidequineequine_anuserectionferalgenitalshand_on_butthi_reshorsehumanhuman_on_feralimminent_analinterspecieslarger_ferallittle_creekmalemale/malemale_feralmale_humanmale_on_feralmale_on_humanmammalpenispuffy_anusraised_tailsize_differencesmaller_humanspirit:_stallion_of_the_cimarronspirit_(cimarron)tailtail_anus