Your cat just made that sound. If you've lived with a cat, you know exactly which one. The pre-vomit gag that sends you scrambling across the room. Sometimes it's nothing, and sometimes it means something. Here's how to figure out which one you're dealing with.
Before anything else, there's a useful distinction. Vomiting involves effort. Your cat's abdomen heaves, and they bring up partially digested food or bile. Regurgitation is more passive. Undigested food comes up with little warning, often in a tube shape, shortly after eating.
Regurgitation often points to eating too quickly or an esophageal issue. Vomiting more commonly involves the stomach or something systemic. If you can describe what you saw when you talk to your vet, it genuinely helps narrow things down.
The list is long. Some causes are completely normal. Others need treatment.
Cats are very committed to grooming, and the hairball is the tax. Hairballs happen when cats groom themselves and swallow loose fur that clumps in the stomach.
Occasional vomiting of a hairball, a narrow tube-shaped mass, is normal for most cats, especially long-haired breeds. If hairballs are happening frequently or your cat is straining and nothing comes up, a vet can recommend dietary changes or remedies to help.
Some cats treat every meal like it might be their last. If your cat inhales their food and throws up undigested food shortly after, this is simple dietary indiscretion. Puzzle feeders or smaller, more frequent meals can help slow them down.
Food allergies and food sensitivities can cause chronic vomiting, often alongside diarrhea, itching, and weight loss. Identifying the cause typically requires a strict dietary trial using a novel protein or hydrolyzed food. Dietary changes under vet guidance are the standard approach.
IBD is one of the most common gastrointestinal disorders in cats. It causes chronic vomiting, diarrhea, weight loss, and often a gradual change in eating habits. Diagnosis usually involves bloodwork, ultrasound, and sometimes a biopsy. It's manageable long-term with diet changes and medication.
Chronic kidney disease is extremely common in older cats. When the kidneys can't filter waste properly, toxins build up in the bloodstream and trigger nausea. Vomiting, weight loss, increased thirst, dehydration, and lethargy are typical signs. Bloodwork and a urinalysis confirm it.
Hyperthyroidism is caused by an overactive thyroid gland and is very common in middle-aged to older cats. The thyroid gland produces too many hormones, which speeds up the metabolism. Vomiting, weight loss despite a good appetite, restlessness, and diarrhea are common signs. It's very treatable once diagnosed.
Pancreatitis causes vomiting, abdominal pain, lethargy, and loss of appetite. It can be hard to diagnose because the symptoms overlap with other conditions. Bloodwork and ultrasound are typically needed, and treatment focuses on supportive care and fluid therapy.
Liver disease can cause vomiting alongside lethargy, loss of appetite, and weight loss. Diabetes in cats can cause vomiting, increased thirst, weight loss, and low energy. Both are diagnosed through blood tests.
Intestinal parasites like roundworms or giardia cause vomiting, diarrhea, and weight loss, particularly in younger cats or cats with outdoor exposure. A fecal test is a quick way to check.
Cats that eat something unusual, whether a houseplant, a piece of string, or just something that doesn't agree with them, can develop an upset stomach. Constipation can also cause cats to vomit when straining.
Many common houseplants are toxic to cats. Lilies are at the top of that list. All lily varieties can cause acute kidney failure in cats, even in small amounts. Philodendrons, pothos, and certain cleaning products are also toxic. If you think your cat ate something it shouldn't have, treat it as an emergency.
Cats that chew on string, ribbon, or linear foreign objects can develop intestinal blockages. Repeated vomiting that won't stop, especially paired with lethargy and abdominal pain, is a red flag.
Most cat owners have been here. The question is usually whether to watch and wait or pick up the phone. If you aren’t sure whether or not your cat’s vomit is normal or concerning, here are some factors to consider:
Scout Pet Urgent Care is the right call when something's off and you don't want to wait for a regular vet appointment. Come in if:
Scout's approach is straightforward: your veterinarian explains what they found, walks you through the options, and the two of you figure out the right plan for your cat.
Some situations need an emergency animal hospital right away instead of a trip to the urgent care. Go immediately if:
Poisoning, intestinal blockages, and severe dehydration can turn serious fast. When in doubt, go in.
Once or twice, especially if your cat seems fine otherwise, is usually not alarming. More than two or three times in a day, or vomiting that keeps happening over several days, warrants a vet visit.
No. Daily vomiting isn't normal and should be evaluated. Chronic vomiting often has an underlying cause like IBD, kidney disease, or a food sensitivity.
If your cat vomited once and is acting normally, you can offer a small amount of bland food after a couple of hours. If vomiting continues, hold off and contact your vet.
Sunken eyes, dry or tacky gums, and skin that doesn't quickly spring back when pinched are all signs of dehydration. A cat that's vomiting repeatedly and showing these signs needs prompt attention.
All lily varieties are extremely toxic to cats and can cause kidney failure. Philodendrons, pothos, and several other common houseplants are also toxic. The ASPCA has a complete toxic plant list that's worth checking before bringing anything new into your home.
Most of the time, a vomiting cat is fine. When it's not, catching it early makes a real difference. Scout Pet Urgent Care is available same-day in Chicago. Walk-ins are welcome, or book online. We're open 10 AM to 8 PM, seven days a week.