• Recognize the symptoms of pneumonia in your dog.dog image by Ramona smiers from Fotolia.com
  
  Pneumonia in dogs can be caused by a bacterial, viral, fungal or parasitic infection; it usually occurs when the dog inhales bacteria. Dogs less than a year old are more likely to get the disease, according to Dog Health Guide.org, but dogs of any age can be affected. Left untreated, pneumonia can lead to your dog's death; recognizing the symptoms is the first step to his recovery.
  
  

Coughing

• Frequent coughing is one of the more noticeable symptoms of pneumonia in dogs, reports Dog Health Guide.org. If your dog has been diagnosed with bronchitis, pay special attention to giving him proper care to prevent the onset of pneumonia.
  
  

Troubled Breathing

• You might start to see your dog having trouble breathing. Her breaths will be shallow and rapid. Your dog's lips may start bulging outward while breathing, says Seefido.com. Wheezing or panting might be present as well.
  
  

Discharge

• Nasal discharge is common. Mucous secretions coming out of the mouth while your dog is coughing is another common sign. The tongue, lips and gums may become a greyish or bluish color.
  
  

Abnormal Behavior

• Loss of appetite, lethargic behavior, and dehydration in your pet are often symptoms of pneumonia. You may also notice that your dog is refusing to drink water, which will cause further dehydration.
  
  

Body Temperature

• If your dog's temperature is elevated, this could be a sign of pneumonia. A dog's temperature can reach 104 degrees Fahrenheit (40 to 41 degrees Celsius) in a severe fever attack, according to Seefido.com. If your dog's temperature gets this high, you should take him to a veterinarian as soon as possible.