Bright Yellow Vomit Dogs. Bile is a fluid produced in the liver and stored in the gallbladder. Your dog’s vomit can range from chunky and filled with undigested food to liquid as light as water, white foam and yellow vomit can often cause pet owners to be perplexed on what each episode means.
You’ve probably seen your dog scarf down something that is indigestible and chuck it right back up later. This can happen if you have morning sickness. This yellow foam is a form of bile, or digestive fluid, that is produced in the liver, stored in the gallbladder, and released into the small intestine, just below the stomach.