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2017 abs animal_genitalia animal_penis anthro ball_tuft black_body black_fur black_penis canid canine canine_genitalia canine_penis crouching erection fully_sheathed fur genitals glowing glowing_eyes hi_res i-psilone knot knotted_penis male male_anthro mammal multiple_images muscular muscular_anthro muscular_male mythological_canine mythological_creature mythology nude nude_anthro nude_male penis red_eyes sheath simple_background solo tail teeth tuft werecanid werecanine werecreature werewolf