Rule 34 Dev - absurd_res anal anthro anthro_on_anthro anus ass avian back_muscles beak big_anus big_butt bird black_background bodily_fluids butt_grab butt_sniffing butt_squish clothing dialogue duo english_text facesitting falcon falconid forced forced_rimming hand_on_butt hat headgear headwear hi_res huge_butt male male/male male_on_bottom male_on_top male_only mammal muscular muscular_anthro muscular_male musk nude on_bottom on_top onomatopoeia oral puffy_anus rimming sex simple_background size_difference smokey_bear sniffing sound_effects sparkx squish sweat sweaty_butt text ursid wardraws yaoi|5041950336