FURVERT!

4_toes 5_fingers anal anal_penetration animal_genitalia animal_penis anthro anthro_on_anthro ball_size_difference balls big_balls big_penis black_body black_fur blue_body blue_fur bodily_fluids canid canine canine_genitalia canine_penis canis desert duo fangs feet fingers fox fur fur_markings genitals green_eyes green_sclera knot knotting larger_anthro larger_male leg_markings male male/male male_anthro mammal markings muscular open_mouth orange_body orange_fur pawpads paws penetration penis penis_size_difference purple_penis purple_tongue red_body red_fur saliva seibear size_difference sky smaller_anthro smaller_male smaller_penetrated socks_(marking)teeth toes tongue tongue_out white_body white_fur wolf zoru