Rule 34 Dev - 2011 all_fours anthro anthro_on_anthro balls canine claws clenched_teeth closed_eyes crawling domination dragon duo ear_piercing erection fox furry happy leash leash_pull male male_domination mammal monochrome muscular nude penis piercing reptile riding scalie simple_background sitting sitting_on size_difference small_dom_big_sub teeth volvo white_background yaoi|2644054664