DISEASES OF CATS 91 



Broncho-pneumonia. 



Broncho-pneumonia is the ordinary form of 

 pneumonia in the cat. It may occur primarily 

 after exposure to cold, or it may be the sec- 

 ondary result of a bronchitis which has lasted 

 for some little time. The pneumonia in the 

 cat, like that in the dog, is a broncho-pneu- 

 monia, or a pneumonia due to filling up of iso- 

 lated little lobules in the lung of the animal, 

 and differs from the ordinary pneumonia of 

 man arid the horse, in which latter the inflam- 

 mation invades a whole lobe of the lung. In 

 broncho-pneumonia there is more fever than in 

 simple bronchitis. The constitutional symptoms 

 and debility of the animal are more marked, 

 with usually a total loss of appetite. On aus- 

 cultation, in addition to the mucous rales which 

 are heard in bronchitis, we have " sibilant " 

 rales, or sounds of more or less sharpness, like 

 those of a whistle, which are due to the hepa- 

 tization or filled-up lobules pressing upon and 

 compressing the lumen of the air-tubes which 

 lead to lobules of sound lung-tissue. Broncho- 

 pneumonia in the cat may also be caused by 



