Causes of severe pneumonia in dogs

Pneumonia is caused by respiratory infections due to colds, unclean air, poor ventilation, overwork, lack of vitamins in the body, and decreased body resistance, resulting in respiratory tract or respiratory tract infections in dogs. The disease occurs after a period of incubation period of microorganisms outside the body. The dog is attacked by viruses or inhales irritating gases, soot or eats foreign objects and enters the lungs. Pneumonia occurs for a long time. If pneumonia is not treated in time, it will directly turn into severe pneumonia.