Cats can technically survive without food for about one to two weeks if they have access to water. However, this does not mean it is safe or healthy for them to go that long without eating. After just 24 to 48 hours without food, cats begin to experience serious health problems, including nutritional deficiencies and the risk of developing hepatic lipidosis (fatty liver disease), which can be life-threatening, especially in overweight cats

. Key points about cats going without food:

• With water: Cats can survive up to 1-2 weeks without food, but their health deteriorates rapidly after 24-48 hours of not eating

• Without water: Cats generally cannot survive more than 3-4 days without water, as dehydration sets in quickly and causes organ stress and failure

• Health risks: After 2 days without food, cats may show weight loss and dull fur; after 3 days, symptoms like tiredness, vomiting, and dark urine appear; after a week, muscle loss and weakened immunity occur

• Kittens: They are much more vulnerable and can only survive a few hours to a day without food before severe health issues like hypoglycemia and dehydration arise

If a cat refuses to eat for more than 24 hours, it is critical to seek veterinary care promptly to prevent serious complications

. In summary, while cats might survive up to two weeks without food if hydrated, they start to suffer serious health consequences after just one to two days without eating, so immediate attention is needed if a cat stops eating.