CR tested 58 dog foods from brands including Blue Buffalo, Hill’s Science Diet, and Purina for key nutrients and dangerous contaminants. Here's what we found.

NASHVILLE, Tenn. (WTVF) — If you've got a pet you probably want what's best for them when it comes to their food. But new testing is raising concerns about some of the dog food that's on the market.

including the presence of harmful bacteria and excessive levels of vitamin D. After analyzing 58 dog foods, Consumer Reports found Listeria monocytogenes, a potentially dangerous bacteria ...