Rule 34 Dev - 2_heads absorption_vore after_frame_focus animal_genitalia animal_penis anthro balls base_two_layout basic_sequence big_balls bodily_fluids breasts canine_genitalia canine_penis claws conjoined cum duo erection fangs female feral four_frame_image four_frame_sequence fusion genital_fluids genitals gynomorph howl intersex interspecies knot male male/female male_penetrating merging multi_head nightmare_fuel nipples nude penetration penis pussy row_two_layout sex snarling tail teeth transformation transformation_sequence vaginal vaginal_penetration vore what what_has_science_done demon-man european_mythology greek_mythology mythology canid canid_demon canine canis cerberus demon hellhound human mammal mythological_canine mythological_creature wolf 2007 comic greyscale monochrome sequence|617646085