Rule 34 Dev - 2boys age_difference anal anal_sex anthro anthro_on_anthro balls blueballs_(artist) blush canid canine canis color comic dialogue domestic_dog duo english_text erection father father_and_son from_behind_position furry furry_only gay hi_res id_card incest male mammal no_humans nude parent penetration penis sex son speech_bubble text tongue tongue_out uncensored yaoi|3454987336