FURVERT!

2018 4_toes 5_fingers all_fours animal_genitalia animal_penis anthro anus ass_up backsack balls bedroom_eyes black_body black_fur black_nose black_pawpads brown_body brown_fur butt canid canine canine_genitalia canine_penis canis claws digitigrade dipstick_tail domestic_dog eracin erection feet fingers fur genitals german_shepherd half-closed_eyes herding_dog hi_res knot knotted_penis long_ears looking_at_viewer looking_back male mammal markings multicolored_body multicolored_fur multicolored_tail narrowed_eyes nude pastoral_dog pawpads paws penis perineum presenting presenting_anus presenting_hindquarters raised_tail rear_view red_eyes seductive simple_background smile solo tail tail_markings tan_body tan_fur toe_claws toes tuft white_body white_fur