Skin allergies are common in dogs, with environmental, flea, and food allergies being the main culprits. These allergies trigger an inflammatory response, causing symptoms like itching, skin irritation, and in some cases, hair loss or infections. A weakened or damaged skin barrier can lead to various skin problems, including atopic dermatitis, dry skin, and increased susceptibility to infection. This illustration was created as an educational piece for a pet food manufacturer.