Rule 34 Dev - 2021 absurd_res age_difference anal anal_knotting anal_sex animal_genitalia animal_penis anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro anus ass balls big_balls big_butt bodily_fluids bouncing_balls brown_body brown_fur canid canine canine_penis canis cum cum_in_ass cum_inside dialogue domestic_dog duo father father_and_child father_and_son from_behind_position fur genital_fluids genitals hi_res incest jessimutt knot knot_fucking knotting lying male male/male male_only male_penetrated male_penetrating male_penetrating_male mammal muscular muscular_anthro muscular_male nude on_front parent parent_and_child penetration penis sex size_difference text url yaoi|4907894288