Laryngeal paralysis in animals is a condition in which the muscles that move the aretynoid cartilages of the
larynx cease to function, and instead of opening during vigorous inspiration and closing during swallowing, the aretynoids hang loosely in a neutral position. This leads to inadequate ventilation during exercise and during thermoregulatory panting as well as incomplete protection of the airway during swallowing. Affected animals thus have reduced tolerance for exercise and heat and an increased risk of aspiration pneumonia. Laryngeal paralysis is fairly common in large breed
dogs, but is also rarely found in
cats.
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