FURVERT!

1:1 animal_genitalia animal_penis anthro autofellatio balls canid canine canine_genitalia canine_penis canis domestic_dog genitals hand_on_butt hi_res kemono knot line_art male mammal masturbation mouth_closed oral oral_masturbation pawpads penile penile_masturbation penis signature simple_background sketch solo three-quarter_view zosen