FURVERT!

against_natural_surface against_surface animal_genitalia animal_penis autofellatio balls bear bodily_fluids claws cum cum_in_mouth cum_in_own_mouth cum_in_self cum_inside cum_on_self fangs feet feral feral_with_hair foot_grab forest genital_fluids genitals hair hi_res leaning leaning_forward log long_tongue male mammal masturbation monochrome oral oral_masturbation paper-wings penile penile_masturbation penis plant retracted_sheath sheath sitting sketch solo spread_legs spreading sun_bear teeth tongue tongue_wrap tongue_wrapped_around_penis tree ursine ursine_genitalia ursine_penis wood