FURVERT!

1:1 2008 aaron_(artist)all_fours anal anal_penetration animal_genitalia animal_penis anthro backsack balls big_balls biped bodily_fluids butt canid canine canine_genitalia canine_penis canis cum cum_while_rimmed cum_while_rimming cumshot digital_drawing_(artwork)digital_media_(artwork)duo ejaculation equid equine equine_genitalia equine_penis erection eyes_closed facesitting fangs genital_fluids genitals grin horse knot licking looking_at_viewer looking_back looking_pleasured male male/male male_focus mammal masturbation messy monochrome multiple_poses multiple_scenes muscular nude open_mouth oral orgasm penetration penile penile_masturbation penis piercing pose presenting presenting_hindquarters presenting_penis raised_tail red_and_white rimming sex simple_background sitting sitting_on_another sketch smile solo_focus spread_legs spreading standing tail teeth tongue tongue_out tongue_penetration white_background wolf