My cat is vomiting yellow liquid: what should I do?

Vomiting of any kind in a cat is a clear sign of a health problem. In this case, the owner's primary responsibility is to determine the underlying factors and provide assistance, as the animal's health and future survival may depend on the timeliness and correctness of the response.

What causes the yellow color?

Yellow vomit indicates bile, which should not be present in a healthy cat's stomach, has entered the cat's stomach. It quickly irritates the stomach lining, as it is a harsh substance for the gastrointestinal tract. In this case, the vomit takes on a rich, bright yellow color and a distinctive odor.

Important! Sometimes the yellow color of vomit can be caused by the presence of dyes in commercial feed, but in this case, the vomit will have a grayish-yellow hue rather than a deep yellow.

If your cat is vomiting yellow liquid, it is important to consider:

• time and conditions of the first vomiting;
• frequency of vomiting;
• the amount and consistency of vomit;
• presence of appetite and desire to drink;
• last meal;
• the possibility that the cat swallowed something inedible or spoiled;
• the appearance of other symptoms;
• chronic diseases of the pet;
• vaccination and deworming.

If you need to contact a veterinarian, this information will help you quickly understand the situation and make the correct diagnosis.

Causes of vomiting bile

The first thing to know is that vomiting is always a symptom, not a disease in itself. Therefore, identifying the underlying cause will help relieve the urge to vomit. Possible causes include:

• Foreign body ingestion. A pet may find an inedible object on the floor or grass, mistaking it for food. If the object is small, it is usually passed along with the feces. In other cases, the body actively produces bile acids, accelerating the digestion of substances in the stomach, and the excess may be expelled along with vomit.
• A sudden change in diet to a higher-calorie diet. In such cases, the liver hasn't yet had time to adapt to the new regimen, so the cat sometimes vomits a yellow, foamy liquid containing bits of undigested food.
• Helminth infestation. In severe cases, the body attempts to eliminate the parasites through vomiting, which may also contain parasites and blood.

• Digestive problems. Rapidly swallowing large pieces of food, feeding stale or fatty foods, or feeding large quantities of eggs can cause digestive problems, resulting in bile in the vomit.
• HepatitisIt is accompanied by yellowing of the mucous membranes, refusal to eat, increased body temperature, the release of dark urine, diarrhea, and vomiting of yellow liquid.
• Liver failure. The animal develops an unpleasant odor from the mouth, constant nausea and fainting, and the whites of the eyes turn yellow.
• PlagueA dangerous disease characterized by fever, diarrhea, lethargy, and frequent vomiting with bile secretion, accompanied by intense muscle tension throughout the body.
• LipidosisA disease associated with the accumulation of excess fat in the liver, which results in liver dysfunction, inflammation, and toxin accumulation. In this case, the cat rapidly loses weight, stops eating, and vomits yellow fluid.
• Gallbladder dysfunction. These problems are quite rare in cats, but the first sign is vomiting of a yellow liquid consisting entirely of foam.

What to do

If vomiting is a one-time occurrence, there's no cause for concern. However, if it persists for a long time or occurs regularly, specific measures should be taken:

• Remove food. For example, if vomiting is caused by a change in diet, it is recommended to withhold food for about 24 hours to allow any uneaten food to be eliminated through vomit or feces.
• Give your cat plenty of fluids to avoid dehydration. This doesn't guarantee stopping vomiting, but it does help flush out bile from the stomach, minimizing irritation of the mucous membranes and preventing further inflammation.

Advice! If your pet starts vomiting again after drinking water, give them small amounts of water every 30 minutes. This method of drinking usually doesn't provoke further vomiting. Pure water or chamomile tea are good for rehydrating.

Under no circumstances should you self-medicate or give your pet medications intended for humans: an irritated stomach can be further damaged by such medications, leading to additional complications.

If vomiting does not stop within 24 hours, you should take your pet to the veterinarian immediately, as severe dehydration can cause death within 48 hours of the onset of illness. The veterinarian will examine the cat to determine the cause of the vomiting and prescribe the appropriate treatment. Medications typically prescribed include antispasmodics and sorbents. A strict diet is also included during treatment.

You can also ask our website's staff veterinarian a question, who will answer them as quickly as possible in the comments box below.

Read also:

• My cat is vomiting white foam: why and what to do
• My cat vomits after eating: why and what to do
• What to do if a cat is vomiting?