Rule 34 Dev - 2001 2boys all_fours anal anal_sex animal_genitalia anthro anthro_on_feral canine canine_penis caprine doggy_style duo feral from_behind_position furry hooves interspecies kneeling male male_only male_penetrated male_penetrating maledom malesub mammal nude penetration penis semi-erect sex sheep sheepskin surprise yaoi yapok zoophilia|2615856568