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2020 all_fours animal_genitalia anthro balls big_balls biped black_body black_mane black_nose countershade_tail countershade_torso countershading digitigrade ear_tuft eyebrows genitals hi_res huge_balls hyper hyper_balls hyper_genitalia male mammal mane nude rodent sciurid sheath simple_background solo sparrow_(artist)standing tail tree_squirrel tuft tusks yellow_eyes