FURVERT!

anal anal_penetration animal_genitalia animal_penis anthro balls bdsm bondage bound canid canine canine_genitalia canine_penis canis christmas christmas_clothing christmas_headwear clothing digital_media_(artwork)duo erection fangs genitals half-closed_eyes hands_behind_back hat headgear headwear hi_res holidays knot ltshiroi male male/male male_penetrated male_penetrating male_penetrating_male mammal narrowed_eyes nipples open_mouth outside penetration penis pillarbox santa_hat sex shaded smile snow spread_legs spreading teeth tlt_echelon tongue upside_down_penis wolf