FURVERT!

animal_genitalia animal_penis anthro anus backsack balls blue_eyes blue_nose blue_pawpads blue_penis butt canid canine canine_genitalia canine_penis canis casparr dobermann domestic_dog erection fur genitals hand_on_penis hi_res knot knotted_penis looking_at_viewer looking_back male mammal nude pawpads penis penis_backwards pinscher presenting presenting_hindquarters raised_tail short_tail simple_background smile solo tail zrin