Poetry and Rhymes

When Carl Sandburg says "the fog comes on little cat feet", what poetic device is it?

More Questions from Poetry and Rhymes
In the poem "Charge of the Light Brigade", how many men were in the charge?
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What did "Betty Botter" need for her batter?
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Who wrote the poem "I, Too, Sing America"?
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Whose poem is titled "One Art"?
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In the nursery rhyme "Jack and Jill", why did Jack and Jill go up the hill?
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In "Old Mother Hubbard", what happened when she came back from the baker?
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In the nursery rhyme, there was an old woman who lived in which piece of clothing?
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The title character in "The Fir-Tree" is annoyed when what animal hops over him?
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