Why Is My Cat Not Eating? Causes & What to Do

When your cat stops eating, it's a significant cause for concern for any pet owner. Anorexia, or a lack of appetite, in cats is never normal and can indicate a wide range of underlying issues, from minor upsets to serious medical emergencies. Due to their unique metabolism, even a short period without food can lead to severe health complications like hepatic lipidosis (fatty liver disease), making prompt attention crucial.

Common Causes for a Cat Not Eating

Many factors can lead a cat to refuse food. It's helpful to observe your cat for other symptoms to give your veterinarian a clearer picture.

1. Medical Conditions

Many illnesses can cause a loss of appetite. These include:

• Dental Disease: Painful teeth, gum disease, or oral injuries can make eating incredibly uncomfortable. Cats may approach their food, seem hungry, but then refuse to eat due to pain.
• Gastrointestinal Issues: Conditions like inflammatory bowel disease (IBD), pancreatitis, gastroenteritis, intestinal parasites, or even foreign bodies can cause nausea, abdominal pain, and vomiting, leading to food aversion.
• Kidney Disease: Both acute and chronic kidney failure can lead to a build-up of toxins in the blood, causing nausea and a poor appetite.
• Liver Disease: Conditions affecting the liver, including hepatic lipidosis (which can be a consequence of not eating) or cholangitis, can cause lethargy and anorexia.
• Hyperthyroidism: While some cats with hyperthyroidism eat more, others can experience digestive upset, leading to a decreased appetite.
• Cancer: Various types of cancer can suppress appetite, either directly or as a side effect of treatment.
• Infections: Bacterial, viral (e.g., Feline Herpesvirus, Feline Calicivirus), or fungal infections can cause fever, lethargy, and a general feeling of unwellness, leading to anorexia.
• Pain: Any source of pain, such as arthritis, injuries, or urinary tract infections, can make a cat feel too unwell or uncomfortable to eat.

2. Stress and Behavioral Issues

Cats are creatures of habit and can be sensitive to changes in their environment. Stress can significantly impact their appetite.

• Environmental Changes: Moving to a new home, new pets or people in the household, changes in routine, or even loud noises can stress a cat.
• New Food or Bowl: Cats can be particular. A sudden change in diet, a new food brand, or even a different type of food bowl (some cats dislike plastic bowls due to 'whisker fatigue') can cause them to refuse food.
• Food Aversion: If a cat associates a certain food with a negative experience (e.g., medication mixed in, feeling sick after eating), they may refuse it.
• Competition: In multi-cat households, competition for food bowls, even if subtle, can prevent a more timid cat from eating adequately.
• Cleanliness: Cats are very clean animals. A dirty food bowl or litter box that isn't regularly cleaned can deter them from eating.

3. Medications

Certain medications can have side effects that include nausea or a decreased appetite. If your cat recently started a new medication and has stopped eating, discuss this with your veterinarian.

4. Toxins

Ingestion of toxic substances, such as certain plants, household cleaners, or human medications, can cause severe gastrointestinal upset and a loss of appetite.

What You Can Do at Home (Temporarily)

While veterinary attention is paramount, especially if your cat hasn't eaten for 24 hours, there are a few things you can try in the short term to encourage your cat to eat, once serious medical issues have been ruled out or are being addressed by a vet.

• Offer Tempting Foods: Try offering small amounts of highly palatable food, such as canned tuna (in water, no salt), plain cooked chicken (shredded), or a small amount of meat-based baby food (ensure no onion or garlic powder). Avoid offering too much human food, as it can upset their stomach further.
• Warm the Food: Gently warming wet food can enhance its aroma and make it more appealing. Ensure it's not too hot.
• Ensure Cleanliness: Provide fresh water and ensure food bowls are spotless. Consider a wider, shallow bowl if you suspect whisker fatigue.
• Reduce Stress: Create a quiet, safe eating area away from other pets or household activity. Maintain a consistent routine.
• Avoid Force-Feeding: Never attempt to force-feed your cat, as this can cause aspiration and create a stronger aversion to food.

This article provides general information and is not a substitute for professional veterinary advice. If you are concerned about your cat's health, always consult with a veterinarian.

When to Call Your Vet

• Immediately if your cat has not eaten for 24 hours or more. This is a critical timeframe for cats due to the risk of hepatic lipidosis.
• Immediately if your cat is also showing other concerning symptoms, such as vomiting, diarrhea, lethargy, difficulty breathing, hiding, or signs of pain.
• Immediately if you suspect your cat has ingested a toxic substance.
• As soon as possible if your cat is eating significantly less than usual for more than 1-2 days, even if they are eating a little.
• If your cat appears to be in pain while trying to eat, suggesting dental issues or other oral problems.

Do not wait to see if the problem resolves itself, as a loss of appetite in cats can quickly become life-threatening. Your veterinarian will perform a thorough examination, which may include blood tests, urinalysis, imaging (X-rays or ultrasound), and other diagnostics to pinpoint the underlying cause and recommend appropriate treatment.