The first thing to do is to find the cause of a dog vomiting yellow water. It may be that it has swallowed a foreign object. In this case, the owner needs to observe whether the dog can spit out the foreign object. If not, please go to the hospital to check the foreign object and perform surgery to remove it if necessary. If it is caused by long-term hunger, give the dog some water.

If it is not very serious, fast the dog for a day, observe the dog's vomiting, and give it after regaining its appetite. The dog should be fed a light diet, and the dog should be fed digestive drugs or probiotics to restore the normal flora in the gastrointestinal tract. When symptoms are severe, it is recommended that pet owners take their dogs to a pet hospital for treatment.