Rule 34 Dev - 3_toes 4_fingers age_difference anal anal_sex animal_genitalia animal_penis anthro balls bed bedroom blue_and_white canine canine_penis claws clothing duo erection father father_and_son half-closed_eyes hand_on_chest incest inside knot lying male mammal monochrome nude on_back open_mouth parent pawpads penetration penis sex size_difference smile son toes tongue underwear wade_wolf weaselgrease weylen wolf yaoi|3339943152