When managing a dog with allergies, it's crucial to identify and avoid certain ingredients that can trigger allergic reactions. Common allergens for dogs include:

1. **Protein Sources**: Many dogs are allergic to specific proteins. Common culprits include:
- Beef
- Chicken
- Lamb
- Fish
- Eggs
If your dog has a known protein allergy, look for alternative protein sources like turkey, duck, or novel proteins such as kangaroo or rabbit.

2. **Grains**: Some dogs may be sensitive to grains. Common grains to avoid include:
- Wheat
- Corn
- Soy
Consider grain-free options or use alternative carbohydrates like sweet potatoes, peas, or quinoa.

3. **Dairy Products**: Lactose intolerance is common in dogs, leading to digestive issues and skin problems. Avoid giving your dog milk, cheese, or yogurt unless they are specifically labeled as safe for dogs.

4. **Artificial Additives**: Many commercial dog foods contain artificial colors, flavors, and preservatives which can trigger allergies. Look for natural, whole food ingredients without added chemicals.

5. **Certain Vegetables and Fruits**: While many fruits and vegetables are safe, some can cause issues. For example, onions and garlic are toxic to dogs. Always research before introducing new foods.

To determine specific allergies, consult with your veterinarian and consider an elimination diet where you gradually introduce new ingredients to identify triggers. Keeping a food diary can also help track your dog’s reactions to different foods.

Always consult your vet before making significant changes to your dog’s diet, especially if they have known allergies.

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Topics covered in this question:

Pet Care Dog Nutrition Dog Allergies Dog Food Allergen Management