Evidence of cats in the stables? (4)

I believe the answer is:

mews

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'the stables?' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

(Other definitions for mews that I've seen before include "Former stable dwellings" , "(Converted) stable buildings" , "Row of houses converted from stables" , "Ex-stabling housing" , "Maybe little more than an alley" .)

I've seen this clue in The Irish News.

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