Dogs vomiting yellow water are gastrointestinal diseases, such as gastritis, which are usually caused by improper diet. If your dog has such a situation, you need to fast and drink immediately, and then feed some probiotics to help digestion. In more serious cases, it is necessary Send to hospital immediately for treatment. Do not give your dog food that is difficult to digest, especially bones, and do not give your dog raw or cold food. Feed your dog on time every day, and every meal should be eight cents full.