anal anal_penetration animal_genitalia animal_penis anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro balls big_balls blush brown_body brown_fur equine_genitalia equine_penis eyes_closed from_behind_position fur genitals glory_hole group group_sex humanoid_genitalia humanoid_penis locker locker_bench locker_room locker_room_sex male male/male male_penetrated male_penetrating male_penetrating_male muscular muscular_anthro muscular_male nude nude_male oral penetration penile penile_penetration penis penis_in_ass penis_in_mouth sex side_view size_difference threesome white_body white_fur yiffinar canid canine canis domestic_dog equid equine horse mammal wolf hi_res signature