Rule 34 Dev - 2019 anal anal_knotting anal_sex aquest ass_up balls blush canid canine canis casual_sex dialogue digitigrade domestic_dog door duo english_text fur hair hi_res knotting line_art lying male male/male mammal nude on_front penetration penis semi-anthro sex speech_bubble spread_legs spreading standing stompdog stuck tapering_tail text unknown_species walking|3928989568