Rule 34 Dev - abs all_fours anal anal_penetration animal_genitalia animal_penis anthro anthro_on_anthro anus athletic athletic_anthro athletic_male backsack balls balls_above_penis being_watched bent_over butt doggystyle equine_genitalia equine_penis erection eyes_closed from_behind_position genitals group happy happy_sex hooves interspecies looking_at_another looking_pleasured male male/male male_penetrated male_penetrating male_penetrating_male marsupial_penis masturbation nude pecs penetration penile penile_masturbation penis queue raised_tail sex sheath tail tail_embrace tail_grab thick_tail tribal voyeur jailbird equid equine horse kangaroo macropod mammal marsupial 1:1 2011 digital_media_(artwork) shaded|578636765