While this is indeed referred to as food allergies, with most dogs with this issue will be allergic to triggers that are mixed into the food. The biggest culprits are artificial chemical additives such as coloring or flavoring. And the symptoms of this can be quite bad, since a Beagle will be ingesting the allergen daily.
This said, a smaller number of Beagles will have intolerance for an actual food ingredient. Dogs can be allergic to anything from milk products to wheat to soy, and in some cases even a certain meat such as chicken.
Ingesting the ingredient each day causes a never-ending reaction, most commonly an upset stomach (vomiting and/or diarrhea) and skin reactions that include dry, itchy skin, rash and/or fur loss due to the irritated skin.
Treatment When a Beagle is Allergic to a Food Ingredient
If you suspect food allergies with your Beagle, it is recommended to have this confirmed with your Beagle's veterinarian. Once confirmed, action can be immediately taken.
If the allergy is triggered by chemical additives, you will want to completely remove these from your Beagle's diet.
This is done by looking at both his main kibble and all the snacks that are given to him. You'll want to choose a high quality food for main meals that is all natural, can contains zero artificial coloring, flavoring or preservatives.
One of the best foods for a Beagle, and particularly for one suffering from an allergy to additives, is Wellness Core's Natural Grain Free
dry dog food, which is a 5-star food that contains no artificial preservatives, colors or flavors. In addition, it contains a fish and flax omega blend which helps to reverse damage to both skin and coat.