Cat couples audibly (4)

I believe the answer is:

lynx

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'cat' is the definition.
(I know that lynx is a type of cat)

I can't explain the remainder of the clue.

(Other definitions for lynx that I've seen before include "Keen-eyed cat" , "one with exceptionally good sight" , "Short-tailed wildcat, often with tufted ears" , "Sharp-eyed cat" , "Wild cat noted for keen sight" .)

I've seen this clue in The Independent.

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