The cows with holes in their sides – Channel 4 News

A Swiss company has released footage of14 cannulated cows - cows that have a hole in their sides that allow farmers to look into their stomach and ensure more balanced feeding for the animals.
A Swiss company has released footage of14 cannulated cows - cows that have a hole in their sides that allow farmers to look into their stomach and ensure more balanced feeding for the animals.

Farmers dig out cow stuck in cliff hole in Cornwall - BBC News

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NZAVS - SHOCKING: COWS WITH HOLES IN THEIR SIDES!🐮💔 The

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Hole-y cow: weird window into research

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Video of cows with cannula stomach opening is from study

Undercover footage shows cows with 'portholes' inserted into their