elves, hobbits, man, goblins... all these creatures were not invented by Tolkien, he took them from a variety of myths, hobbits are Halflings which have been described as between 2 and 4ft tall, elves have been described as tall and slender, with slightly pointed ears, immortal and more graceful than man... so the way these races look is the way they have looked for centuries of tale and myth
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