1916 20th_century ambiguous_gender ancient_art black_and_white canid canine cheek_tuft claws digitigrade dire_wolf erwin_s._christman facial_tuft feral hi_res mammal monochrome open_mouth outside prehistoric_species quadruped sharp_teeth short_fur side_view solo tail teeth toe_claws tongue tongue_out traditional_media_(artwork) trotting tuft
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