There are many reasons why dogs frequently cough and vomit white mucus. Gastroenteritis, ingestion of foreign bodies, respiratory diseases, etc. can all cause this symptom in dogs. If the situation is serious, they need to be sent to the hospital for examination and treatment to avoid aggravation of the condition. Dogs have sensitive gastrointestinal tracts, so they should pay more attention to their daily diet. Do not feed random foods, strengthen nutritional supplements, and improve the dog's own immunity. Feed probiotics regularly to help regulate the gastrointestinal tract, maintain environmental hygiene, and disinfect frequently to prevent bacterial and virus infections. .