Dogs can suffer from allergies to fleas, environmental allergens and more, and the issues may manifest as skin problems. Cats also develop allergies, but they usually exhibit gastrointestinal symptoms, according to veterinarian Jules Benson of Petplan. Allergy testing is available for pets, and treatments are aimed at alleviating the discomfort associated with allergies, since, just like in humans, they can't be cured.

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