It may be caused by hairball disease. The hairballs constantly irritate the cat's stomach, causing gastritis or obstruction, leading to retching, anorexia, vomiting of hairballs or yellow water. You can feed your cat sesame oil, cat grass or hair removal cream to help it get rid of hair balls quickly. The daily diet should be mixed with some crude fiber foods.

If there are parasites in the cat’s stomach, it will also affect its appetite, causing it to stop eating or drinking and vomiting yellow water. You can take your cat to a pet hospital for a fecal examination to see if there are parasites. Generally, cats over three months old can be dewormed for the first time. If they are less than three months old, do not deworm them casually. If it is confirmed that there are parasites, use anthelmintics under the guidance of a pet doctor according to the parasite body.

Of course, cats may vomit or stop eating due to stress reactions due to changing environment, changing cat food, or receiving vaccinations. You can take pet probiotic type B to regulate the gastrointestinal flora.

If your cat’s vomit is yellowish and frothy, accompanied by symptoms such as diarrhea, unwillingness to eat, and listlessness, it is likely to be suffering from acute enteritis. If it is accompanied by fever and continuous vomiting, it cannot be ruled out that it is cat plague. If this situation is found, the cat should be sent to the pet hospital for treatment in time.