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4_toes abs anthro balls biceps big_balls big_muscles big_pecs big_penis biped blue_and_white canid canine claws digital_media_(artwork)digitigrade feet flaccid foreskin fox fur genitals glans hair hi_res holding_penis humanoid_genitalia humanoid_penis juano line_art male mammal monochrome muscular muscular_anthro muscular_arms muscular_male muscular_thighs nipples nude paws pecs penis simple_background smile solo standing tail toe_claws toes vein veiny_penis white_background