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abs anthro balls canid canine canis collar domestic_dog dominant duo fluffy fluffy_tail genitals hi_res hybrid kneeling knot knotted_penis leash leash_pull leashed_collar male male/male mammal muscular muscular_anthro muscular_dom muscular_male muscular_top open_mouth oral oral_penetration outside outside_sex pawpads pecs penetration penile penile_penetration penis penis_in_mouth phaulis sex snow standing tail tongue tongue_out vein veiny_penis wolf wolfdog