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Something was bugging Lady. The 8-year-old Border Collie mix was missing patches of fur above her eyes, around her ears and bottom and she had developed sores from her constant scratching. Her Pet Parents, suspecting fleas were the cause, tried everything to help relieve her itching from flea dips and spot-on treatments to even bathing her in a homemade oatmeal mixture, but nothing seemed to help. After a trip to the vet, they discovered it wasn’t what was eating Lady that was causing her skin irritation; it was what Lady was eating.
Lady was exhibiting one of the classic signs of a dog food allergy: skin irritation.
“Food allergies are the third most common cause of sensitive skin disorders after fleas or other external parasites and environmental triggers like pollen or grass,” according to Dr. Robyn Jaynes, PetSmart veterinary expert.
They are also difficult to detect because the symptoms mimic those of other disorders. Dog food allergies are often confused with pet food intolerance or when the food simply doesn’t agree with the pet.
Allergies, also referred to as food hypersensitivities, are adverse reactions of the immune system to a certain protein in the pet’s food like beef or dairy. Food intolerance is when a food simply doesn’t agree with your pet.
Common signs of food allergy in dogs include itchy skin especially around the face, muzzle, feet, pads, ears, armpits and behind, hot spots, vomiting and diarrhea. Food allergies often develop in dogs after eating the same type or brand of food for long periods of time.
“First consult your vet to determine if your pet has a food allergy or intolerance,” says Mark Finke, Ph.D. and pet nutritionist. “Then try a premium food with a limited number of protein and carbohydrate sources.” Ask a PetSmart associate for recommendations on best foods.
Your vet may also suggest a prescription food. To transition your pet to the new food, mix a small amount of the new food with the current food and increase the new food over the course of 10 days.
While allergy tests for dogs and cats are available, the accuracy of these tests is still undetermined. Simple elimination and trial and error with your pet’s diet is the best way to determine what is causing your pet’s reaction.
According to studies conducted by veterinary dermatologists, dogs and cats can develop food allergies after eating one type or brand of food for a long period of time.
While food additives are often blamed for causing food allergies or food intolerance, there are no published cases of reactions caused by pet food additives.
The information used in this report is approved by PetSmart nutritionists and vet experts.
Information from “Small Animal Clinical Nutrition,” 4th Edition, Hand, Thatcher, Remillard, Roudebush, Copyright 2000 by Mark Morris Institute was used in this report.