Rule 34 Dev - absurd_res all_fours anchee animal_genitalia animal_penis anthro anus ass athletic back_markings black_body black_fur black_nose brown_eyes canid canine canine_penis canis digitigrade domestic_dog erection fur fur_markings furry furry_only genitals german_shepherd herding_dog hi_res knot krieg_gsd looking_at_viewer looking_back male male_only mammal markings nude pastoral_dog pawpads paws penis perineum presenting presenting_anus presenting_hindquarters raised_tail rear_view red_markings sheath smile smiling_at_viewer solo tail tan_body tan_fur|7496653640