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Merck Veterinary Manual. Neoplasia of the Respiratory System in Dogs and Cats. Merck & Co., Inc. Accessed July 2026.
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Merck Veterinary Manual. Canine Nasal Mites. Merck & Co., Inc. Updated September 2024. Accessed July 2026.
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Merck Veterinary Manual. Clinical Signs of Respiratory Disease in Animals. Merck & Co., Inc. Accessed July 2026.
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