Rule 34 Dev - 2017 anal anal_sex animal_genitalia animal_penis anthro balls canine canine_penis chakat-silverpaws claws cum cum_inside erection fur group group_sex internal knot licking male mammal muscular nude open_mouth oral penetration penis sex simple_background stefan_sledwolf stomach_bulge threesome tongue tongue_out were werewolf wolf yaoi|2768846640