My cat vomits yellow fluid with white foam and has poor appetite.

There are many causes for a cat vomiting yellow fluid and white foam; choose treatment by cause. If the cat is otherwise energetic and eating fine and vomits only once or twice, first fast and withhold water for a day, then feed a little liquid food and pet probiotics to regulate, with cephalexin anti-inflammatory; for severe vomiting use cimetidine. In addition, cold weather, environment change, or fireworks noise can cause gastrointestinal reaction, so keep it warm and calm; if vomiting continues with lethargy, diarrhea, fever, or refusal to eat, suspect feline distemper, parasites, pancreatitis, or liver/kidney inflammation and seek hospital treatment..