Rule 34 Dev - 2017 animal_genitalia animal_penis anthro ass_up balls biped black_fur breast_squish breasts brown_fur buttjob canine canine_penis chumbasket doberman duo erection faceless_male female fur hair knot lying male mammal multicolored_fur nude on_back penis precum signature straight two_tone_fur vein veiny_penis white_hair|2532541080