It runs fast and sounds as though it does! (7)

I believe the answer is:

cheetah

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'it runs fast and sounds as though it does' is the definition.
The definition suggests a singular noun which matches the answer.

This is the entire clue.

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(Other definitions for cheetah that I've seen before include "Beast" , "Long-legged feline" , "Carnivorous predator" , "Swift African cat" , "Animal that's remarkably quick" .)

I've seen this clue in the Evening Standard.

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