If your cat is not eating, do not automatically assume they are simply being picky. Appetite loss can be caused by something as simple as a stressful food change or as serious as dental pain, pancreatitis, kidney disease, intestinal blockage, or liver disease.
If your cat is not eating, do not automatically assume they are simply being picky. Appetite loss can be caused by something as simple as a stressful food change or as serious as dental pain, pancreatitis, kidney disease, intestinal blockage, or liver disease.
There are many possible reasons a cat may eat less, stop eating, or suddenly refuse food. Veterinary sources describe appetite loss (anorexia) as a clinical sign associated with a wide range of conditions, including dental disease, gastrointestinal problems, kidney disease, diabetes, pancreatitis, liver disease, fever and other illnesses. Stress and food or environmental changes can also reduce appetite.
One important distinction is between true anorexia and pseudo-anorexia. A cat with true anorexia may have little or no desire to eat. A cat with pseudo-anorexia may want food but be unable to pick it up, chew, swallow, or eat comfortablyâfor example because of oral pain. This distinction can help a veterinarian narrow down the problem.
Dental disease, inflamed gums, damaged teeth, oral ulcers or other mouth problems can make eating painful. A cat may approach food, hesitate, chew differently, drop food, drool, paw at the mouth, or walk away.
Nausea can suppress appetite. Vomiting, lip-licking, repeated swallowing, drooling, diarrhea or abdominal discomfort may accompany gastrointestinal illness.
Systemic diseases can change appetite and behavior. Kidney disease, diabetes, liver disorders and other metabolic problems may require blood and urine testing to identify.
Inflammatory disease can cause pain, nausea, lethargy and reduced food intake. Cats may show subtle signs, so a seemingly quiet appetite change should not be dismissed.
Moving house, boarding, a new pet, conflict with another cat, changes in routine, or an uncomfortable feeding location can reduce food intake in some cats.
A sudden diet change, unfamiliar texture, stale food, or a bowl/location change can cause some cats to refuse meals. Food aversion can also develop after nausea or illness.
General pain can reduce appetite. Watch for hiding, reluctance to move, changes in posture, unusual vocalization or resistance to being touched.
Swallowed string, thread, hair bands, tinsel or other objects can cause a dangerous obstruction. Loss of appetite may occur with vomiting, pain, lethargy or reduced stool.
Yesâat least enough to monitor closely and contact your veterinarian if the appetite change persists. Cats are skilled at hiding illness, and a cat can appear fairly normal during the early stages of a problem.
If your cat is otherwise bright, drinking normally, using the litter box and has only skipped part of a meal, you can observe closely while offering their normal food. However, a complete refusal of food, a clear reduction in intake, repeated episodes, weight loss, or any additional symptom should prompt veterinary advice.
Do not rely on the phrase âmy cat is not eating but acting normalâ as proof that nothing is wrong. Appetite is an important health signal.
A cat that is refusing both food and water needs more urgent attention than a cat that has merely become selective about one meal. Reduced water intake can contribute to dehydration, while the combination of appetite loss and other symptoms may indicate significant illness.
Call a veterinarian promptly if your cat is not eating or drinking, especially if there is vomiting, diarrhea, weakness, pain, dry or tacky gums, unusual sleepiness, or a noticeable change in urination.
Do not force food into your cat's mouth unless your veterinarian has specifically instructed you how to provide nutritional support. Force-feeding can cause distress and may create a risk of food entering the airway. When a cat needs assisted nutrition, a veterinarian can determine the safest approach, which may include a feeding tube in appropriate cases.
You can make food more appealing by offering a familiar, palatable option in a quiet place. Some cats respond to food that is served fresh or gently warmed, but preferences vary. These measures are supportiveânot a substitute for diagnosing the cause of appetite loss.
Hepatic lipidosis, commonly called fatty liver disease, is a potentially serious liver disorder in cats. It is strongly associated with periods of poor appetite or food deprivation. When a cat stops eating, the body mobilizes stored fat for energy; in susceptible cats, excessive fat can accumulate in the liver and impair normal function.
Veterinary references note that hepatic lipidosis is particularly important in cats that are overweight, although it can occur in cats of different ages and body conditions. Signs can include marked weight loss, lethargy, vomiting, drooling and jaundice (yellowing of the gums, eyes or skin).
This is one reason âwait a few days and seeâ is not a good general strategy when a cat has stopped eating. Early veterinary assessment can identify the underlying problem and help restore safe nutrition.
Because cats can develop serious complications from prolonged poor intake, contact your veterinarian when your cat stops eating or has a significant appetite change. The urgency increases when the cat is very young, elderly, overweight, already has a medical condition, takes medication, or has additional symptoms.
| What you notice | Recommended response |
|---|---|
| Small appetite change but otherwise normal | Monitor closely, offer familiar food and contact your vet if it persists or worsens. |
| Complete food refusal | Contact your veterinarian promptly rather than waiting several days. |
| Not eating + vomiting, diarrhea, marked lethargy or pain | Seek prompt veterinary assessment; urgency depends on severity. |
| Not eating + yellow/pale gums or eyes, severe weakness or collapse | Urgent/emergency veterinary care. |
| Possible toxin exposure | Contact a veterinarian or emergency animal service immediately; do not wait for symptoms. |
| Possible swallowed string/foreign object | Urgent veterinary assessment. Never pull string from the mouth or anus. |
| Straining to urinate with little/no urine | Emergency veterinary care. |
The goal is to identify why the cat is not eating and to protect the cat from complications while the underlying problem is treated. Your veterinarian will typically begin with a detailed history and physical examination.
Your vet may ask when appetite changed, how much was eaten, what food is offered, recent diet or household changes, vomiting or diarrhea, urination and stool, medications, possible toxin exposure, and any weight change.
The mouth and teeth, hydration status, body condition, abdomen, temperature, heart and lungs and overall behavior may be assessed.
Depending on the examination, blood and urine tests can help evaluate organ function, hydration, inflammation, glucose and other abnormalities.
If obstruction, pancreatitis, liver disease, dental disease or another condition is suspected, your veterinarian may recommend imaging or condition-specific testing.
Treatment depends entirely on the cause. It may involve pain control, anti-nausea treatment, fluids, dental care, treatment of an underlying disease, a therapeutic diet, or assisted nutritional support. Nutritional support is especially important when a cat has developed or is at risk of hepatic lipidosis.
This guide also addresses common questions such as cat not eating, cats not eating, my cat is not eating, why is my cat not eating, cat not eating or drinking, cat barely eating, cat suddenly not eating, cat has stopped eating, cat loss of appetite, cat not eating but drinking, and cat not eating and vomiting.
If your cat's appetite has changed, collect the key detailsâhow long they have eaten less, whether they are drinking, vomiting, urinating and passing stool, and any behavior changesâand share them with your veterinarian.
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Common possibilities include dental pain, nausea, gastrointestinal disease, kidney or liver disease, pancreatitis, fever, medication effects, stress, environmental changes and food aversion. A veterinary examination is the best way to determine the cause.
There is no single âsafeâ waiting period that applies to every cat. Cats that stop eating should be taken seriously because prolonged poor intake can contribute to hepatic lipidosis. Contact your veterinarian promptly for guidance.
Drinking is reassuring compared with refusing both food and water, but it does not rule out illness. Monitor food intake and other symptoms and contact your veterinarian if the appetite loss persists or is accompanied by vomiting, lethargy, pain, weight loss or other changes.
This combination can occur with significant illness, pain, dehydration, gastrointestinal problems, toxin exposure or obstruction. If your cat is weak, repeatedly vomiting, painful, collapsed or unable to urinate, seek urgent veterinary care.
Eating less than usual can be an early sign of illness. Dental pain, nausea, stress and systemic disease are among the possibilities. Track the amount eaten and contact your veterinarian if the change continues.
Vomiting plus appetite loss deserves veterinary advice. Seek care urgently if vomiting is repeated, your cat cannot keep water down, appears weak or painful, may have eaten something harmful, or has other concerning symptoms.
Yes. Moving, boarding, a new pet, household conflict and other environmental changes can affect appetite. However, stress should not be assumed to be the cause until medical problems have been considered.
A sudden food change can sometimes make appetite worse. Unless your veterinarian recommends a different diet, avoid repeatedly switching foods. Offer a familiar, appropriate diet and seek veterinary advice if refusal continues.
This educational article was developed using veterinary references including Cornell University College of Veterinary Medicine, Merck Veterinary Manual, VCA Animal Hospitals and PDSA. Sources are provided for further reading and do not replace an examination by a veterinarian.