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Rider provides cover for US soldier around animals (4)

Ross

I believe the answer is:

pigs

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'animals' is the definition.
The answer is an example.

I can't explain the remainder of the clue.

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(Other definitions for pigs that I've seen before include "earthenware crocks" , "Boars and sows" , "Swine" , "Farm animals" .)

I've seen this clue in The Telegraph.
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