A Nutritional & Practical Guide to Apple Cider Vinegar for Dogs Apple cider vinegar (ACV) has been used for thousands of years across many cultures. Today, it remains a popular natural ingredient in both human and animal nutrition. When used appropriately, ACV can offer dietary variety and serve as a useful household product for general care routines. This guide explores the history of ACV, the differences between filtered and unfiltered varieties, and safe, practical ways do