2018 anal anal_sex anatomically_correct anatomically_correct_penis animal_genitalia animal_penis anthro arms_behind_back ass_to_ass ball_gag balls black_balls black_feathers black_fur black_hair black_penis black_wings blue_eyes blush bondage bound bound_together cutie_mark digital_media_(artwork) dildo double_anal double_dildo double_penetration dripponi duo equine equine_penis erection feathered_wings feathers feral feral_on_feral fur gag gagged hair hi_res hooves horsecock male malesub mammal multicolored_hair multiple_boys multiple_subs my_little_pony pegasus penetration penis quadruped red_hair red_tail rope sex_toy side_view signature two_tone_hair underhoof white_feathers white_fur white_wings wings yaoi