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2025 anthro anus aquatic balls blue_body blue_fur body_writing butt collar degradation english_text erection fish fluffy free_use fur genitals green_background hi_res hybrid kinktober kinktober_2025 leg_markings lying maiiyumi male markings nude on_side open_mouth open_smile pattern_background paws penis purple_eyes shark shark_fin shark_tail simple_background smile smiling_at_viewer socks_(marking)solo spread_anus spread_butt spread_legs spreading tally_marks text western_tally_marks writing_on_balls writing_on_butt writing_on_genitals