As a veterinarian, it's important to be aware of the common allergies that dogs and cats can experience. One of the most common allergies is related to their food, which can cause skin irritation, itching, and even gastrointestinal issues. Another common allergy is related to environmental factors like pollen, dust, and mold, which can cause respiratory issues. Additionally, many pets can be allergic to fleas or other parasites. It's important to work with pet owners to identify the cause of their pet's allergy and develop a comprehensive treatment plan to keep them healthy and happy.