Cattle swallowed up by wildlife e-business (4)

I believe the answer is:

beef

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'cattle' is the definition.
(beef is a kind of cattle)

I can't explain the remainder of the clue.

(Other definitions for beef that I've seen before include "Grumble over cattle meat?" , "Grouse - meat" , "Argument" , "gripe" , "nickname of US State" .)

I've seen this clue in The Irish Times.

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