3_toes 4_fingers age_difference anal anal_penetration anthro anthro_on_anthro asphyxiation balls bdsm belt big_dom_small_sub black_nose blue_countershading blue_fur blue_topwear blush bobbie bondage bottomless bound brothers canine cheek_tuft clenched_teeth clothed clothing countershade_face countershade_torso countershading cum cum_on_penis domination drooling duo ears_back erection eyebrows flat_colors fur glans green_eyes grey_countershading grey_fur grey_tail hair hair_over_eye half-closed_eyes hand_on_shoulder handcuffed handcuffs head_tuft humanoid_penis incest knee_tuft kneeling larger_male light_bondage looking_pleasured male male/male male_domination male_penetrating mammal motion_lines multicolored_fur older_male on_ground open_mouth open_shirt orange_topwear penetration penis penis_size_difference pink_penis pink_tongue police_hat police_uniform retracted_foreskin robbie rotten_robbie saliva shackles shirt sibling size_difference smaller_male spread_legs spreading submissive submissive_male sweat t-shirt teeth tight_fit toes tongue tongue_out tuft two_tone_fur uncut uniform wolf younger_male