Dogs with one nostril running yellow and sticky snot generally have the following conditions. Firstly, respiratory tract infection caused by cold and flu, early treatment is more effective and serious respiratory problems can lead to pneumonia. Secondly, it may be caused by an infectious disease. This is similar to that caused by distemper and canine adenovirus. If it is accompanied by symptoms such as poor spirits, loss of appetite and vomiting, it needs to be taken to the vet for examination and symptomatic treatment.
