abs alien anal anal_penetration anthro balls biceps big_muscles big_penis dominant dragon dragon_ball duo e621 erection gastropod genitals horn humanoid_genitalia humanoid_penis larger_dom larger_male male male/male male_penetrated male_penetrating male_penetrating_male mature_anthro mature_male mollusk muscular muscular_male mythological_creature mythological_scalie mythology nipples non-mammal_balls non-mammal_nipples nude penetration penis porunga pronounced_browridge scalie sex size_difference slug smaller_male tail uniparasite

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