Cats can be famously picky eaters. One day they love a food, the next they turn their nose up at it. But when your cat stops eating completely or suddenly eats much less than usual, it can understandably be worrying.
A short dip in appetite isn’t always serious. Cats may occasionally go off their food for a day or two, especially if something in their routine changes. However, a sudden or ongoing loss of appetite in cats can sometimes signal an underlying health issue that needs veterinary attention.
Knowing what to look for can help you decide when it’s time to seek advice.
Is It Normal for a Cat’s Appetite to Change?
Yes — a cat’s appetite can vary from day to day, just like ours.
However, it’s important to watch for changes from your cat’s normal eating habits, including:
- Eating noticeably less than usual
- Refusing food completely
- Only nibbling or licking at food
- Suddenly preferring different types of food
- Changes in how often they eat
If your cat has stopped eating entirely, it’s usually a sign something isn’t right and should be investigated.
Multi-Cat Homes: Why Appetite Changes Can Be Missed
If you have more than one cat, appetite changes can be harder to spot.
When cats eat together, one cat may quietly stop eating while another finishes the leftovers. This means a loss of appetite may go unnoticed for longer.
Try to occasionally observe each cat during mealtimes, particularly if you suspect one may not be eating as normal.
Signs Your Cat May Have Lost Their Appetite
Loss of appetite in cats can show up in different ways. Some cats cannot eat due to pain or illness, while others choose not to eat because they feel unwell or stressed.
Common signs include:
- Refusing food completely
- Nibbling or licking food without finishing it
- Eating only certain foods (for example wet food but not dry)
- Dropping food while trying to eat
- Excessive drooling
- Teeth grinding when chewing
- Changes in normal feeding behaviour
Loss of appetite is often only one symptom. You may also notice:
- Lethargy
- Vomiting
- Weight loss
- Behavioural changes
Common Causes of Loss of Appetite in Cats
There are many reasons why a cat may stop eating. Some are minor and temporary, while others require veterinary treatment.
Pain or Dental Problems
Pain can make eating uncomfortable or even impossible.
Common causes include:
- Dental disease
- Infected or damaged teeth
- Mouth injuries
- Jaw pain
- Arthritis making it painful to reach food bowls
If eating hurts, cats often simply stop.
Food Changes or Dislike
Cats can be extremely particular about food.
A sudden change in diet, new flavours, or feeding table scraps can lead to:
- Digestive upset
- Food refusal
- Reduced appetite
When changing food, it’s best to introduce new diets gradually over several days.
Stress or Environmental Changes
Cats are sensitive creatures and even small changes can affect their appetite.
Stress triggers may include:
- Moving house
- A new pet or baby
- Visitors or loud environments
- Changes to feeding routines
Ongoing stress can sometimes lead to serious health complications, including liver issues.
Illness or Underlying Disease
Sometimes appetite loss is linked to medical conditions.
These may include:
- Kidney disease
- Heart conditions
- Gastroenteritis
- Infections
- Chronic illness
Many of these conditions also cause nausea or discomfort, which can make eating difficult.
When Should You Take a Cat to the Vet for Not Eating?
You should contact a vet if your cat:
- Has not eaten for 24 hours or more
- Appears lethargic or unwell
- Shows vomiting or weight loss
- Seems in pain when eating
- Has sudden or persistent appetite changes
Cats can become seriously ill if they go too long without eating, so early advice is always best.
If you’re unsure, speaking to a veterinary professional can provide reassurance and guidance.
Treatment for Appetite Loss in Cats
Treatment depends on the underlying cause.
After examining your cat, your vet may recommend:
- Medication to treat illness or relieve pain
- Fluid therapy if your cat is dehydrated
- Dental treatment if mouth problems are present
- Nutritional support to encourage eating
- Changes at home to reduce stress
Your vet will aim to restore your cat’s appetite while addressing the root cause.
Worried About Your Cat’s Appetite?
If your cat isn’t eating or their eating habits have changed, it’s always worth getting advice.
Before heading straight to the vet, Scratch & Patch customers can call our free 24/7 Vet Careline, where a qualified veterinary nurse can talk through your cat’s symptoms, help you decide whether a vet visit is needed, and offer guidance on the next steps.
If a vet examination is required, getting advice early can help identify problems sooner — keeping your cat happy, healthy, and enjoying their meals again.
