2008analanal_penetrationanimal_genitaliaanimal_penisanthroanthro_on_anthroballsblotchcanidcaninecanisduoequidequineequine_genitaliaequine_peniserectiongenitalshorseinterspeciesmalemale/malemale_penetratedmale_penetratingmale_penetrating_malemammalmonochromenudepenetrationpenisscratches_volume_2sextailtraditional_media_(artwork)wolf