Prescription dog foods, also known as veterinarian dog foods, are food scientifically formulated to meet the health needs of your dog. Prescription dog foods are only available to dog food consumers with a prescription from a veterinarian. They are different from over the counter dog foods that are formulated to support certain health problems like arthritis, obesity, and food allergies. Where Do You Purchase Prescription Dog Foods? Typically you will buy a prescription dog food through your ...