e621 animal_genitalia animal_penis ass_up avian bdsm beak big_dom_small_sub bondage bound bridle cum domination dungeon duo equid equine_penis erection feathered_wings feathers feral gag gagged gryphon hammytoy hands-free horn huge_feet interspecies lying male male_domination male/male mammal mane on_front orgasm penis sex size_difference spreader_bar spreading spread_legs submissive submissive_male tail_grab tail_pull unicorn white_body white_mane wings
 

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