Rule 34 Dev - abs anthro beak belt biceps black_background blush bottomwear breath brown_body bulge clothed clothing clothing_lift duo hair male muscular open_clothing open_shirt open_topwear pants pecs pink_hair shirt shirt_lift simple_background smile tank_top teeth topwear undressing unknown_artist morenatsu keisuke_hirama yuuki_torii avian bird equid equine horse mammal 2012|1396827915