13 Reasons Your Cat’s Not Eating Much But Is Acting Normal Otherwise
Cats are masters of disguise when it comes to hiding illness. It’s a skill that’s handy in the wild but tends to worry us humans a lot!
Ever wonder why your cat’s not eating but still acts normal? The usual suspects are pain, medication side effects, anxiety, and undiagnosed health issues.
Stick around as we explore these common appetite-killers and share vet-approved tips to get your kitty back at the food dish.
KEY POINTS
- Your cat should see a veterinarian if they have not eaten for longer than about 36 hours.
- There are many conditions with subtle symptoms that cause cats to not eat despite acting normally.
- Changing food, spoon-feeding and appetite stimulants may help a reluctant cat eat better.
How to Tell If Your Cat’s Eating Enough
It can be tough to know if your cat’s eating enough especially when they share a bowl or free-feed. You can count the kibbles or weigh the food to keep track. Not sure what’s enough? Check the food label or consult your vet for calorie counts.
Got more than one cat? Feed the one you’re worried about separately and measure their food. Keep tabs on their weight with a weekly check on a baby scale, which is a must for cats with ongoing health or weight concerns.
Need a baby scale? They’re budget-friendly and easy to find online (here’s the scale I bought from Amazon.com) or at baby stores.
Related Symptoms
If your cat’s not eating much but seems to be acting normally, you might miss other subtle signs. Here’s a condensed checklist of symptoms that could indicate an underlying issue:
| Symptom Group | What It Could Mean |
|---|---|
| Vomiting or Diarrhea | Digestive issues, poisoning, infection |
| Crying for food but not eating | Dental pain, behavioral issue |
| Only eating treats, Weight loss | Fussy eater, dental issues, underlying illness |
| Dull, clumpy fur | Poor nutrition, skin condition |
| Changes in thirst & urination | Kidney issues, diabetes |
| Straining with hard stools | Constipation, dehydration |
| Smelly breath, thick saliva, pale/yellow gums | Dental issues, digestive problems, anemia, liver issues |
| Hiding, lethargic, mood changes | Stress, pain, illness |
| Trouble jumping, stiff gait | Arthritis, muscle strain |
| Sunken eyes, furrowed brow | Dehydration, pain |
How Long Can a Cat Go Without Eating?
If cats skip meals, their liver processes body fat for energy. Too much fat too fast can overload the liver.
Overweight cats risk liver issues within 48 hours of not eating. Healthy cats might last 2-3 weeks, losing up to 25% of their weight, before liver problems start.(2)
My Experience with a Cat Named Foxy
A client called me concerned about Foxy, her senior Calico cat. She suspected Foxy might be eating less but seemed fine otherwise.
This client had four other cats so I suggested feeding this one separately and measuring her food. The owner was skeptical, as Foxy didn’t usually eat a lot in one sitting.
As an alternative, I recommended a daily weigh-in at the same time of day using a baby scale. After about a week, it was clear that Foxy had lost a few ounces.
A vet visit revealed a painful tooth. After her dental procedure, Foxy was back to her food-loving self in no time.
13 Reasons Cats Stop Eating
Some of the common causes of appetite problems in cats include pain, anxiety, medication side effects, and undiagnosed disease. Your veterinarian is your ally in figuring out which of these may be affecting your fuzzy friend.
1. Pain
Pain is a major reason cats lose their appetite (also called hyporexia or anorexia). A few of the most common causes of pain in cats include dental issues, osteoarthritis, and traumatic injury.
Signs of pain in cats include decreased appetite, hiding, limping, reacting painfully when touched and having a grouchy attitude. It can be tricky to find the source of pain so be sure to consult your veterinarian for help.
2. Medication Side Effects
Drugs and supplements are meant to help sick cats feel better but most come with one or more possible side effects. Talk to your veterinarian before discontinuing prescription meds.
| Medication | Examples |
|---|---|
| Antibiotics | Clavamox, amoxicillin, Orbax |
| Pain medicine | buprenorphine, gabapentin, robenacoxib |
| Blood pressure | amlodipine, propranolol |
| Anti-parasitics | dewormers, flea/tick control |
| Vaccines | rabies, FVRCP, FeLV |
| Over the Counter Supplements | vitamins, herbal medications, nutritional supplements |
3. Anxiety
Anxiety can be a problem for cats, but many owners mistake it for shyness. Signs of anxiety include hiding, aggressive behavior, or crying to go outside. Anxious cats often don’t eat normally.
Your veterinarian can discuss your cat’s behavior and recommend environmental changes to help the situation. There are many non-prescription anti-anxiety remedies for cats but talk to your vet before experimenting with these.
Editor’s Note: NaturalPetsHQ.com is supported by readers and may earn for purchases made through links in this post.
Feliway is a calming pheromone often recommended by vets and has a high safety margin.
If you don’t see improvement with environmental changes, talk to your vet about trying prescription anxiolytic medication instead.
Check out this video from Jackson Galaxy about cat anxiety…
4. Chronic Kidney Disease
Chronic kidney disease (CKD) is common in senior cats and occurs when kidney cells no longer filter the blood efficiently. The disease is slowly progressive over time. Symptoms include weight loss, decreased appetite, increased thirst and urination.
5. Pancreatitis
The pancreas is a gland in the abdomen that aids in digestion and produces hormones, including insulin. Pancreatitis is a common condition in cats caused by inflammation of the organ. Symptoms may include vomiting, loose stool and abdominal pain. In some cats, the only symptom may be a decreased appetite.
6. Liver Disease
The two most common types of liver disease in cats are hepatic lipidosis and cholangiohepatitis.
Hepatic lipidosis occurs when a starving cat’s liver becomes congested from metabolizing body fat. Cholangiohepatitis is an inflammatory condition often caused by bacteria from the intestinal tract.
Symptoms of liver disease include vomiting, decreased appetite, yellowing of skin/gums/whites of eyes, and dark yellow urine.
7. Inflammatory Bowel Disease
Inflammatory bowel disease (IBD) is characterized by intestinal inflammation but the exact cause is unknown. Symptoms of IBD include low appetite, vomiting, diarrhea or constipation, and weight loss.
8. Diabetes Mellitus
The most common type of diabetes mellitus in cats occurs when their body stops responding to insulin. Symptoms of this disease include decreased weight, increased thirst, appetite, and urination. In advanced stages, diabetic cats may stop eating.
9. Viral Disease
Viral diseases like feline leukemia virus (FeLV), feline immunodeficiency virus (FIV), and feline infectious peritonitis (FIP) can seriously impact a cat’s health and appetite. These viruses weaken the immune system and can lead to other complications, making your cat less interested in food.
10. Intestinal Parasites
Parasites like worms can mess up your cat’s digestive system, making them feel full or nauseous. This can lead to a decreased appetite. They may or may not have diarrhea with parasites.
11. Respiratory Disease
Cats rely heavily on their sense of smell to enjoy food. Respiratory issues like a stuffy nose can dull this sense, making meals less appealing. You will probably also notice sneezing, nasal discharge or louder breathing sounds.
12. Cognitive Changes
As cats age, they may experience cognitive changes similar to dementia in humans. This can lead to confusion or forgetfulness around mealtime. You may also notice them crying more at night, wandering and getting lost in the house.
13. Cancer
As cats live longer with less exposure to trauma and infectious disease, their cancer rates go up. Some of the more common types of cancer in cats include intestinal lymphoma, squamous cell carcinoma of the skin and mammary gland adenocarcinoma.
Diagnosis
Diagnosing your cat isn’t as simple as spotting a symptom. Your vet needs clues to solve the puzzle.
First up, give a detailed history. Share any small changes in your cat’s behavior or looks. Mention new foods, treats, or meds, and let your vet know if your cat has met any new feline friends lately.
Next comes basic testing. Basic tests usually include:
- Complete blood count (CBC)
- Blood chemistry panel
- Thyroid testing
- Urinalysis
- Radiographs and/or ultrasound imaging
Treatment
The most important thing to do is get your veterinarian involved. Getting more information will hopefully allow for a specific diagnosis and targeted treatment.
Depending on how sick your kitty is, he may need hospitalization for more aggressive treatments and monitoring. Some of the most common supportive care hospitalized cats receive include:
- IV fluids, electrolytes and vitamins
- Anti-nausea medication
- Pain medication
- Medication specific to a disease
- Nutrition either by IV route or feeding tube
- Appetite stimulants
Prescription Diets
If your cat has a specific condition like IBD or kidney problems, prescription cat food can be a game-changer. Your vet might recommend low-residue, hypoallergenic, or high-calorie options.
Don’t hesitate to ask your vet for a variety of flavors. Cats can be picky, but luckily, prescription diets come in multiple taste profiles.
Medications
For appetite stimulation, mirtazapine is often the go-to. It’s versatile, available in pill, liquid, or even a skin-absorbing gel known as Mirataz™. The best part? It usually needs to be administered only every 2 or 3 days.
If nausea is an issue, your vet might suggest medications like famotidine, omeprazole, or maropitant, which are generally well-tolerated.
Feeding Tubes
In severe cases, a feeding tube might be the answer. While it sounds extreme, these tubes are not as daunting as they seem and are fairly easy to place. They offer a stress-free alternative to force-feeding your cat multiple times a day at home.
How to Get Your Cat to Eat
In addition to continuing prescribed medications, I’d like to pass on some tricks I’ve learned while trying to get a cat to eat.
| Tips and Tricks | How to Implement |
|---|---|
| Change the Feeding Routine | Feed in a quiet area, try different dish types, or even create a “food fort” with a box. |
| Enjoy Meals Together | Some cats prefer to eat when their humans are eating. |
| Food Toppers | Use Fortiflora® or pantry staples like parmesan cheese and oregano to enhance flavor. |
| Add Warm Liquids | Make food more appealing by adding warm chicken broth or tuna water. |
| Wet Cat Food Options | Offer a variety of brands, flavors, and textures. Consider high-calorie options for under-eating cats. I like this Purina Kitten Food. |
| Freshpet® Cat Food | This fresh-style cat food is a hit with some cats. Serve it warmed with a little chicken broth. |
| People Food for Cats | Offer lean meats, meat-based soups, or Gerber chicken baby food. Avoid garlic and onion. |
| Spoon Feeding | Some cats prefer being spoon-fed. Use it as a short-term solution and let the cat lick from the spoon. |
Now that you’ve got a toolkit of strategies to encourage your cat to eat, you’re well-equipped to tackle this challenge. But we know you might still have some questions.
Let’s answer some frequently asked questions to clear up any lingering concerns you may have.
FAQs
What are some common reasons my cat might not be eating much but still acts normal?
There are several reasons why your cat might not be eating much but still seems okay. These can range from behavioral issues like stress or a change in environment to medical reasons like dental problems or underlying diseases. It’s also possible that your cat is just a very particular eater or is experiencing side effects from medication.
How can I encourage my cat to eat more?
If your cat isn’t eating much, you can try a few different strategies to encourage them. Offering a variety of foods, including wet and dry options, can sometimes stimulate appetite. Warming up the food slightly can also make it more appealing. If you’ve recently changed your cat’s diet, consider going back to the old food to see if that makes a difference. Always consult your vet for personalized advice, especially if the lack of appetite persists.
When should I be concerned about my cat’s decreased appetite?
If your cat’s decreased appetite lasts for more than 24-48 hours, it’s a good idea to consult your vet. A prolonged lack of eating can lead to serious health issues. Also, if you notice other symptoms like lethargy, vomiting, or changes in behavior along with not eating, it’s crucial to get a vet’s opinion as soon as possible.
Conclusion
If your cat skips a meal, it’s usually no big deal. But if they don’t eat for over 36 hours, it’s time to see a vet. Diagnostic tests can quickly pinpoint the issue, saving you time and money in the long run.
Give the tips in this article a try, like using food toppers or changing up the feeding routine. For cats with longer-term health challenges, ask your vet about a feeding tube. It’s a lower stress way to nourish your cat so they can win whatever health battles they’re fighting.
The content provided on NaturalPetsHQ.com is for general information only. It is not meant to replace individualized medical advice from your own veterinarian. Read more on the Privacy Policy and Terms of Use page.
Author: TB Thompson, DVM is a veterinarian with 20+ years of experience in clinics, emergency medicine, and community shelters. She started Natural Pets HQ to give pet owners accessible, trustworthy guidance written by a real vet.
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References
- Armstrong, P. Jane, DVM, MS, MBA, DACVIM (SAIM) (2011). Hepatic Lipidosis in Cats. Western Veterinary Conference, St. Paul, MN: University of Minnesota.
- Armstrong, P. J., & Blanchard, G. (2009). Hepatic lipidosis in cats. Veterinary Clinics: Small Animal Practice, 39(3), 599-616.
- Scherk, M., DVM, DAVBP. (2011). Mellow & Yellow: Treating the Cat with Hepatic Lipidosis. Atlantic Coast Veterinary Conference, Vancouver BC Canada: CatsINK.
Last update on 2026-10-16 / Affiliate links / Images from Amazon Product Advertising API