analanal_penetrationanatomically_correctanatomically_correct_genitaliaanatomically_correct_penisanimal_genitaliaanimal_penisballsbodily_fluidscumcum_in_asscum_insidedarkmareduoequidequineequine_genitaliaequine_penisferalferal_on_feralferal_penetratedferal_penetratingflared_penisfurgenital_fluidsgenitalsgraphite_(artwork)greyscalehalf-erecthooveshorselow-angle_viewmalemale/malemale_penetratedmale_penetratingmale_penetrating_malemammalmonochromeorgasmpenetrationpenispenis_towards_viewerphotorealismprecumquadrupedrealisticrealistic_feralsexsolo_focustraditional_media_(artwork)underhoofworm's-eye_view