Chained wild animal eating ants (7)

I believe the answer is:

echidna

'animal eating ants' is the definition.
(echidnas eat ants)

'chained wild' is the wordplay.
'wild' is an anagram indicator.
'chained' anagrammed gives 'ECHIDNA'.

(Other definitions for echidna that I've seen before include "Toothless type" , "Spiny Aus. mammal" , "Spiny egg-laying Australian mammal" , "Insectivorous mammal" , "Oz native" .)

I've seen this clue in The Guardian.

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