Understanding the Most Common Food Allergies in Dogs

Taking the Lead • December 12, 2025

Many dog owners are surprised to learn that the proteins in their dog’s food can sometimes trigger allergies. Research has shown that certain proteins are more likely to cause reactions, with beef, dairy, and chicken being the top offenders. These ingredients are commonly found in dog foods, which may explain why some dogs develop sensitivities over time.

Other potential allergens include wheat, soy, lamb, corn, eggs, pork, fish, and even rice. While dogs can react to a variety of foods, some proteins are more common culprits.

Food Allergens by Prevalence:
  • Beef: 34%
  • Dairy: 17%
  • Chicken: 15%
  • Wheat: 13%
  • Soy: 6%
Signs Your Dog Might Have a Food Allergy
Food allergies can be tricky to spot because they often overlap with environmental allergies. However, food-related reactions tend to appear year-round and are more common in younger dogs. 

Watch for these signs:
  • Itchy skin or excessive scratching
  • Vomiting or diarrhea
  • Recurring ear or skin infections
  • Hair loss or “hot spots”
  • Weight loss or low energy
Remember, these symptoms could also indicate other health issues, so always consult your vet before making changes to your dog’s diet.

Are Food Allergy Tests Worth It?
Blood tests for food allergies are available, but their accuracy is debated. While they can provide some clues, an elimination diet remains the gold standard for identifying true food allergies. Patience and consistency are key—finding the right diet can take time, but it’s worth it for your dog’s health and comfort.

Understanding the Most Common Food Allergies in Dogs

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