Is Your Dog Having Health Problems or Acting Strange? It Could Be A Food Allergy and your pup may need a hypoallergenic dog food.
Like the rest of us, dogs can suffer from all types of allergies. In fact, 1 in 5 dogs suffer from some type of allergy, such as flea allergy, food allergy, atopic dermatitis, and inhalant allergy.
Let’s focus on food allergies.
The more common symptoms are discharges from the eyes and nose, constant scratching, tail-chasing, coughing and wheezing. If you notice any of these symptoms in your dog, chances are that he/she is suffering from an allergy or allergies. Other symptoms include diarrhea, vomiting, and sometimes, even changes in behavior.
Food allergies are probably the most difficult to diagnose because they can mimic any of the other allergies such as fleas, pollen from trees, grass, and flowers, dust mites and molds.
How to determine the problem food
First, remove all possible allergy causing ingredients from your dog’s diet. You can do this by using homemade meals of a protein and starch source your dog has never had before. Check the ingredients of any dog foods you have been using and make a list of the home made foods you feed your dog.
You may be able to use foods such as lamb and rice, assuming your dog has not had these items before. Gradually add more ingredients to your dog’s diet (one at a time for about a week for each new ingredient). This is why you will need to make this food yourself – so that you can add one ingredient at a time. If your dog’s symptoms return after adding a particular ingredient, there is a good possibility that you have identified the allergen.
Allergic reactions may take a week to appear so be sure to confirm your findings with your vet. Of course, once the offending ingredient has been verified, you will need to keep your dog from consuming that item.
Main Problem Foods
According to several studies some of the main ingredients that are more likely to cause food allergies in dogs are beef, dairy products, chicken, wheat, chicken eggs, corn, and soy. These items are typically the most common ingredients in dog foods, unfortunately. This correlation is not coincidental since many proteins are similar in form and it is likely that the incidence of allergic reactions is related with the amount of exposure (the greater the exposure, the greater that chance of reaction).
Figuring out what allergies your dog has and what is causing them may be a tedious, pain-staking process, but it is worth the effort especially as you see the relief you give your dog translate to a better disposition and mood.

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