There is "nothing to see here" regarding the halal meat furore, a British Retail Consortium director told ITV News.
Andrew Opie said: "The key thing is that these animals are being slaughtered and stunned in exactly the same way in any slaughterhouse."
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Police were called after a dog walker reported seeing a "little crocodile" lurking in a swamp.
Some social media users have called for the cow to be freed and are using the hashtag #SaveCarlisleCow.
Miranda Hollingshead, 27, was visiting Arkansas' Crater of Diamonds State Park with her family when she made the discovery.