Rule 34 Dev - 2011 abs all_fours anal anal_sex anthro anus ass balls biceps black_fur black_hair black_nose black_penis blonde_hair blue_fur brown_fur canine claws close-up closed_eyes cum cum_in_ass cum_inside digitigrade doggy_style duo ear_piercing erection facial_piercing from_behind front_view fur hair hand_on_back hand_on_hip interspecies knot long_hair male mammal multicolored_fur muscles mustelid navel nipple_piercing nipples nose_piercing nose_ring nude otter pecs penetration penis piercing pink_nose rrowdybeast rupert sex simple_background standing teeth toe_claws tymbre white_fur wolf yaoi|2009291704