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Allergies are a frequent trigger for hair loss in dogs. Like people, dogs can have an allergic reaction to foods, environmental triggers such as pollen, or to parasites like fleas or mites. ... Along with hair loss from licking and biting the irritated areas, signs of flea allergies include itching and redness.

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Welcome to The Dog Visitor Q&A [2022], where you can ask questions and receive answers from other members of the community.
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