One of the most common questions on r/dogs is how to feed a dog that is allergic to certain foods. While there is no one size fits to all answer, there are some recommendations that can be helpful. First, it is important to test a small amount of the food that your dog is allergic to see if he suffers any adverse effects. If he does not, then you can gradually increase his exposure to the food. If your dog has suffered adverse effects from eating the food in the past, then it is best to avoid feeding him anything that contains that food altogether. Instead, feed him a food that has been specifically designed for dogs with allergies. Some of the most popular choices include Dog Food Diet, AllergyDog, and No-Bully Dog Food. These foods are really specifically formulated to meet the specific needs of dogs with allergies, and they are typically low in sugar and contain ingredients that are beneficial for dogs' health.