If your cat keeps vomiting yellow water and is unwilling to eat, you must make sure it consumes enough water. Therefore, more clean water should be provided and it is recommended to use wet food instead.
When cats' teeth are infected or rotted, bad breath can occur. Bad breath can cause cats to be unwell and eventually lead to unwilling to eat. Therefore, cats must be regularly inspected, brushed and oral hygiene care must be taken regularly. Another reason for vomiting yellow water is the gastrointestinal discomfort in the cat. If you have indigestion or any problems with the gastrointestinal tract, you will easily experience vomiting. Therefore, cats' diet and dietary methods are very important - eat less and more meals to avoid inferior foods. At the same time, in some cases, cats can be given a moderate amount of probiotics to help them digest.
If a cat lacks sufficient exercise, it is prone to obesity, which leads to various other health problems. This will also affect cats' appetite. Therefore, it is recommended to accompany and guide the cat to exercise regularly to increase its exercise volume.
If the cat always vomits and is unwilling to eat, it is best to go to the veterinarian. A veterinarian may ask for specific tests such as blood and urine tests to understand the cat's body and to determine whether there are internal problems with damage or ulcers. The veterinarian may perform further examinations, recommending proper diet or digestion, and other medications. If there is a problem with the cat's mouth or teeth, anesthesia may be required.