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How Long Can Cats Go Without Food | Tips to Keep Your Cat Healthy

How Long Can Cats Go Without Food

Understanding how long cats can go without food is crucial for every pet owner. Knowing the signs of prolonged fasting can help you identify when your cat needs immediate attention and what steps to take to ensure their health.

In the following guide, we’ll explore how long cats can survive without food and water, along with a detailed look at the physical and behavioral effects of going without these essentials. You’ll learn about the different factors that impact a cat’s tolerance to fasting, from age and health to environmental influences. Read on to discover essential information for ensuring your cat’s well being and recognizing when it's time to take action if they stop eating or drinking.

An owner trying to feed their cat who has not been eating.

How long can cats go without food?

In theory, cats can survive between 1 to 2 weeks without food as long as they drink water, but any cat not eating for longer than 24 hours is a serious concern. Cats that stop eating will lose energy and become progressively weaker, as they need proper Cat Nutrition to maintain health. Going without food for just 2-7 days can put cats at significant risk of hepatic lipidosis, also known as fatty liver disease, a severe condition where the liver begins to break down fat reserves due to a lack of food intake.


If a cat skips meals or has a sudden change in appetite, especially if they're consuming much less food or dry food than usual for more than 24 hours, it’s best for pet parents to contact a vet promptly. Occasional meal skipping may not be dangerous, but early intervention reduces the chances of further health issues and the need for more intensive treatment. Cats who are lethargic, experiencing weight loss and having a Underweight Cat, or Vomiting, showing other signs of distress need urgent attention, as a loss of appetite or altered eating routine could indicate a serious health issue. Ensuring your cat has fresh water and monitoring their appetite is essential to prevent severe conditions like liver disease from developing.

Can a cat go 24 hours without food?

Cats can go up to 24 hours without eating, but it’s generally not healthy for them. If your cat stops eating for a full day, it may indicate a deeper health issue, so it’s best for pet parents to contact a vet. For young kittens who have gone without food for 24 hours, contacting a vet is essential since kittens can deteriorate rapidly without adequate nutrition. Interested in correct Kitten Care?


Older cats who have a regular feeding routine and suddenly stop eating for a day should also be seen by a vet. With Indoor Cats, it’s easier to monitor their eating habits, but if you have an outdoor cat, you may not always notice a change in their appetite. Outdoor cats might supplement their food intake by eating at a neighbor’s house, especially if new neighbors have moved in, or hunting at certain times of the year, which could seem more appealing than their usual cat food at home.


Pay attention to any other symptoms such as lethargy, increased sleeping, or discomfort, as these could signal a cat health issue. If your cat shows any concerning signs or changes in their appetite, it’s always wise to reach out to your vet for guidance and support.

An illustration of two cats one eating one that has not eaten for 24 hours.

What happens if a cat doesn't eat for 2 days?

If a cat doesn't eat for 2 days, it can face serious health risks. Cats need regular food intake to maintain their health, and going without food for more than 24-48 hours can lead to a rapid decline in energy and strength. One major reason a cat might stop eating is illness, pain, or possible Cat Stress, which can cause a sudden change in appetite. A cat that doesn’t eat may be at risk of developing hepatic lipidosis, a dangerous condition where the liver begins breaking down fat stores due to lack of food, especially if the cat continues to drink water but skips meals.

Can a cat go 3 days without food?

A cat can technically survive for about 3 days without food, but this is far from ideal and can be harmful. If a cat stops eating for 72 hours, it may face severe health risks, as cats need a consistent intake of food to support their metabolism and overall health. One reason a cat might refuse to eat could be due to stress, illness, or a sudden change in routine, all of which can cause a loss of appetite.


If your cat hasn’t eaten in 3 days or shows signs of low appetite, pet parents should contact a vet promptly. Even if the cat continues to drink water, it’s essential to address the issue, as a long period without eating can lead to more intensive health problems.

A cat next to a clock looking at a food bowl, the cat has not eaten for 3 days.

How long can cats go without water?

Cats can typically survive without water for 2 to 3 days, but after just 24 hours without it, they start to become dehydrated. Dehydration places significant stress on their organs, potentially leading to serious complications, including organ failure. It’s essential for cats to have access to fresh water daily. However, if your healthy cat primarily eats wet food and seems to drink very little, don’t worry too much, as they get a substantial amount of their hydration from their food.


A cat’s ability to survive without water also varies with environmental conditions; in warmer climates, they’re more likely to become dehydrated faster. Keeping this in mind is important if you notice a decline in your cat's water intake.

What happens if cats don’t drink water for a few days?

Cats generally cannot survive without water for more than 2-3 days. Since many cats get much of their hydration from wet food, a cat refusing food may also be at risk of dehydration.


Simple adjustments, such as providing fresh water daily or trying a new water bowl shape, might encourage your cat to drink more. Additionally, some cats prefer running water, so letting a tap run on low could spark their interest. However, if you notice unusual changes in your cat’s water intake, it could signal an issue.


It’s also important to note that excessive water consumption can indicate dehydration or an underlying health problem. If you suspect your cat may be dehydrated or is drinking an abnormal amount, it’s best to consult your vet promptly.

A cat looking at a bowl of water, very weak because the cat has not had a drink for 2 days.

How long can kittens go without food?

Kittens have very limited energy reserves and can typically only go about 12 to 24 hours without food before they start experiencing serious health risks. Young kittens, especially those under 8 weeks old, need frequent feeding to maintain their growth, energy levels, and immune function. Going without food for even a short period can lead to low blood sugar (hypoglycemia) and dehydration, both of which can be life-threatening in kittens.


If a kitten hasn’t eaten for several hours and appears lethargic, weak, or uninterested in food, it’s essential to contact a vet right away for guidance on how to support their health.

What happens if cats don’t eat for a few days?

If a cat stops eating for even a few days, it may face significant health risks. Without food, the body starts using stored fat for energy, but cats have difficulty processing this fat efficiently, which can lead to serious liver disease, particularly in overweight cats who suddenly stop eating.


If your cat has had an abrupt change in eating habits and hasn’t eaten in over 24 hours, it’s essential to reach out to your vet. A lack of appetite often indicates underlying illness, so a timely check-up is crucial.


We hope this guide on how long cats can go without food has been informative. If you’re concerned about your cat’s eating habits, contacting your vet for advice and possible treatment can help prevent further complications.

A cat very ill, next to an untouched water bowl.

Facts About Cats And Food

  • Cats Can Survive a Few Days Without Food – But It’s Risky: Cats can potentially survive for around 1-2 weeks without food as long as they have access to water, but this is extremely risky. Going more than 24-48 hours without food can trigger serious health issues and cause a rapid decline in their energy levels.

  • Liver Disease is a Major Concern: When cats don’t eat, their bodies start using fat stores for energy, but since their liver isn’t efficient at processing large amounts of fat, they are at risk of developing hepatic lipidosis (fatty liver disease), a life-threatening condition.

  • Water is More Crucial Than Food: Cats can go without food for several days, but they cannot survive without water for more than 2-3 days. Dehydration can occur quickly, putting immense stress on their organs and leading to potential organ failure.

  • Kittens and Older Cats Have Lower Tolerances: Kittens and senior cats have less ability to cope without food compared to healthy adult cats. Kittens can quickly become hypoglycemic without regular nutrition, while older cats are more susceptible to organ strain from fasting.

  • Stress or Illness Often Triggers Fasting: When cats suddenly stop eating, it’s often due to stress, illness, or a change in routine. Understanding these underlying causes is crucial, as addressing them promptly can help prevent prolonged fasting and the associated health risks.

FAQ

How long is it safe for a cat not to eat?

It’s generally safe for a cat not to eat for up to 24 hours, but any longer can start posing health risks. If cats go without food for more than a day, they may begin to weaken, and prolonged fasting can lead to serious health complications like hepatic lipidosis, or fatty liver disease, which can be life-threatening. Cats rely on regular nutrition to maintain their metabolism, so if your cat hasn’t eaten within this timeframe, it’s important to consult a vet to determine the underlying cause and ensure they get the proper care.

How long can my cat go without food if I forget to feed her?

If you forget to feed your cat, she can typically go without food for about 24 hours without major risk, though it’s not ideal. Cats go without food in rare situations, but going over a day without eating can weaken them and may lead to serious health issues if extended further. Unlike some other animals, cats need regular meals to maintain energy and support their liver function. If your cat has missed a meal or two, make sure to offer food as soon as possible and try to keep her feeding routine consistent to avoid stress and health complications.

How long can a kitten go without food before becoming ill?

A kitten can generally go without food for only about 12 hours before it starts facing health risks. Young kittens, especially those under eight weeks, have tiny energy reserves and a high metabolism, making regular feeding crucial. Going too long without food can lead to hypoglycemia (low blood sugar) and dehydration, which are both dangerous and can lead to rapid decline. If a kitten hasn’t eaten within this period and appears weak or lethargic, it’s important to contact a vet immediately for guidance on how to keep them healthy.

Can cats go more than 7 days without water?

No, cats generally cannot survive more than 2-3 days without water. Water is essential for their organ function and overall health, and after just 24 hours without drinking, a cat can start to experience dehydration. Going beyond this can lead to severe dehydration, organ failure, and even become life-threatening. Ensuring that your cat has access to fresh water daily is crucial, especially in hot weather or if they eat mostly dry food, which provides minimal moisture. If a cat has stopped drinking or shows signs of dehydration, it’s important to contact a vet promptly.

Realistically, how often should a cat eat?

Realistically, a cat should eat at least two meals per day, spaced about 12 hours apart. However, many veterinarians recommend feeding cats smaller, more frequent meals, ideally three to four times a day, to mimic their natural hunting patterns. This helps maintain their energy levels and supports digestive health. For kittens, seniors, or cats with specific health conditions, feeding schedules may vary and could require more frequent, smaller meals.


If more than 12 hours pass between meals, a cat’s stomach can become hyperacidic, which may cause nausea. Consistency in feeding times also helps prevent stress and encourages healthy eating habits.

How many days can cats go without food?

Cats can technically survive without food for about 1 to 2 weeks if they have access to water, but this period poses serious health risks. Without food, cats quickly begin to break down fat stores for energy, which their liver cannot process efficiently, often leading to a dangerous condition called hepatic lipidosis (fatty liver disease). After just 2-3 days without food, a cat can start to weaken, and the risk of organ damage and other complications rises.


If a cat hasn’t eaten for more than 24-48 hours, it’s best to contact a vet to identify the cause and ensure they receive the care they need.

Kelly Rushton with her cat Eddie Stafford.

Kelly Rushton

Meet Kelly Rushton, a dedicated cat enthusiast and proud owner of Feline Fancy Ltd. With a heart as big as her household, Kelly is the loving mum to 10 charming Ragdoll cats. In her world, felines reign supreme, and she brings professionalism and warmth to everything she does. Through her blog, Kelly shares her wealth of knowledge and experiences, offering insights into cat care, behavior, and the joy of living alongside these majestic creatures.


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