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1918 20th_century 4:5 5_toes ambiguous_gender ancient_art apodemin archibald_thorburn belly biological_illustration brown_body brown_fur climbing duo english_text feet feral fur grass hairless_tail hi_res mammal multiple_images murid murine nude outside plant public_domain quadruped rodent signature solo technical_illustration text toes traditional_media_(artwork)whiskers white_belly yellow-necked_mouse zoological_illustration