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
What did the Knave of Hearts steal in the nursery rhyme "The Queen of Hearts"?
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Groups of lines in poetry are called what?
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In "Sing a Song of Sixpence", how many blackbirds were baked in a pie?
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Who wrote the poem "Dream Deferred"?
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In "Little Bo Peep", what does Little Bo Peep lose?
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Whose poem is titled "Breaking and Entering"?
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Whose poem is titled "Elegy Written in a Country Churchyard"?
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Who wrote the poem "The Ventriloquists"?
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