2006anatomically_correctanimal_genitaliaanimal_penisanusbacksackballsbodily_fluidscervine_teatscervine_udderscumdeerdock_(anatomy)dominantequidequineequine_genitaliaequine_peniserectionfellatiofemaleferalferal_on_feralflared_penisgenital_fluidsgenitalsgroupgroup_sexhooveshorseinterspeciesklaus_dobermanlarger_domlarger_malemalemale/femalemammalnew_world_deeroraloral_penetrationpenetrationpenilepenispink_teatspink_uddersraised_tailsexsize_differencesmaller_femaletailtail_anusteatsthreesometop_holetrioudderswhite-tailed_deer