FURVERT!

4:5 abdominal_bulge anal anal_penetration anthro asphyxiation barefoot blue_eyes blush bodily_fluids breath canid canine chest_markings choking dipstick_tail duo echidna erection eye_roll feet fox from_behind_position fur genitals half-closed_eyes hi_res humanoid_feet internal kneeling knuckles_the_echidna looking_pleasured male male/male mammal markings miles_prower monotreme multi_tail muscular muscular_male narrowed_eyes nipples nude open_mouth open_smile penetration penis plantigrade pronounced_browridge purple_eyes red_body red_fur rough_sex sega sex side_view signature size_difference smile sonic_the_hedgehog_(series)sweat tail tail_markings tan_body tan_fur tongue tongue_out toodamncycle translucent translucent_body vein veiny_penis white_body white_fur yellow_body yellow_fur