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Discharge from the nose (mucus, pus, or blood, depending on the cause)
Coughing that may be dry or may include mucus or blood
Rapid breathing while at rest
Labored or difficult breathing; shortness of breath
Shallow breathing
Signs of pain associated with breathing in or out
Noise (such as grunting) associated with breathing
Head shaking or abnormal carriage of head (low or extended)
