Rule 34 Dev - 2013 5_fingers abs all_fours anal anal_sex anthro anthro_on_anthro ass backsack balls balls_deep bear bent_over biceps big_balls big_muscles big_penis black_nose blue_eyes blush bottomless breath brown_background brown_fur canine clenched_teeth closed_eyes collar cum cum_drip cum_while_penetrated deep_penetration doggy_style dripping duo erection fangs fluffy from_behind_position fur furry gay hands-free humanoid_hands humanoid_penis itreyu kemo_coliseum male male_only mammal muscular muscular_male nipple_pinch nipples nude null-ghost on_top orange_background orgasm partially_retracted_foreskin penetration penis perineum pinch rear_view scar sex sharp_teeth simple_background sweat tattoo teeth tharsix thick_penis tongue uncut vein veiny_penis white_fur wolf yaoi|2537516168