Rule 34 Dev - animal_genitalia animal_penis anthro balls big_balls big_penis bodily_fluids canine_genitalia canine_penis digitigrade erection expansion genital_expansion genital_fluids genitals growth huge_balls huge_penis hyper hyper_balls hyper_genitalia hyper_penis knot male mid_transformation nude pawpads penis penis_expansion precum snout solo tongue tongue_out transformation pesimist canid canine canis domestic_dog german_shepherd herding_dog human mammal pastoral_dog 5:4|11185918065