Dog Vomiting Yellow Fluid. Bile isn’t always cause for concern. Bilious vomiting syndrome “bile is a fluid produced in the liver and stored in the gallbladder,” says dr.

However, on an empty stomach, bile can enter the stomach and irritate the stomach lining enough to cause vomiting; After a meal, bile normally flows from the gallbladder into the small intestine to help break down fats. Some dogs will vomit from time to time, but repeated vomiting requires some attention.