Feeding a Cat After Surgery: What to Offer and When to Call the Vet

By Tailwisp Editorial TeamUpdated October 20, 20264 min read

Bringing a cat home from surgery is a mix of relief and worry. One of the first questions is food: when to offer it, what to offer, and what to do if your cat turns up its nose. The answers depend on the operation, but a few principles apply to nearly every recovery.

Why appetite drops

Anesthesia and pain medication can cause sleepiness, nausea and a reduced sense of smell and taste. Stress from the clinic, the car and a new smell on the fur may also dampen appetite. Cats have a particular risk when they stop eating, since fasting can lead to liver problems, so it is important to notice and act. See cat anesthesia safety and hepatic lipidosis in cats.

The first evening

Your vet will tell you how to feed. As a general guide:

1. Let your cat settle. Put it in a quiet, warm room with water, a litter box and a comfortable bed, away from other pets.
2. Offer a small portion of its usual food or a bland option a few hours after getting home, around a quarter to half the normal amount.
3. Do not force food. If your cat is too sleepy or not interested, try again in an hour or two.
4. Offer water, in a shallow bowl, near its bed.
5. Avoid big meals, since an upset stomach may follow.

The next days

Appetite usually returns within twenty-four hours, and often sooner. Gradually increase portions to normal over a day or two. Keep to the usual food unless your vet has changed it, since new foods on top of a post-operative stomach may cause upsets. See how to switch cat foods.

Tempting a reluctant cat

• Warm the food slightly, for about five to ten seconds in a microwave, and stir. Warmth releases aroma.
• Use strong-smelling food, such as a favorite wet food, or a little tuna or sardine in water, as a one-time tempter, not a long-term diet.
• Hand feed small portions, or offer food on a spoon.
• Add warm water to make a soupy consistency.
• Try a different texture. Pâté, flaked, and broth styles appeal to different cats.
• Offer a recovery food that your vet recommends, which is often calorie-dense and easy to eat.
• Stay calm. Anxious attention can put a cat off.

See how to pick wet cat food and cat not eating: causes.

Surgery-specific advice

• Spay or neuter. Normal food in small portions is usually fine. See feeding a neutered or spayed cat.
• Dental surgery. Soft food for a week or two, especially after extractions. See cat dental cleaning: what to expect.
• Stomach or intestinal surgery. Vets often prescribe a gastrointestinal diet, introduced gradually, in small meals.
• Urinary surgery. A prescription urinary diet and extra water. See cat urinary diet explained.
• Orthopedic surgery. Normal diet, with attention to weight, since extra pounds slow healing.
• Cancer surgery. High-calorie, easy-to-digest food may help.

Medication and food

Pain medicines and antibiotics are often given with food to protect the stomach. Ask your vet which are given with a meal. Never give human pain medicines, which can be fatal. See cat poisoning: what to do.

Appetite stimulants and feeding tubes

If your cat will not eat, your vet may prescribe an appetite stimulant, or in some cases suggest a feeding tube or syringe feeding for a few days. Do not syringe feed without instruction, because food can enter the lungs.

Hydration

Dehydration slows recovery. Offer water often, and wet food. Signs of dehydration include dry gums and tenting skin. See cat dehydration signs and treatment.

Litter and bowel movements

Some cats do not pass stool for a day or two after surgery, due to medication and low food intake. Contact your vet if it lasts longer, or if your cat strains. See constipation in cats.

Watch for warning signs

Call your vet urgently for:

• No eating after 24 to 48 hours.
• Repeated vomiting.
• Lethargy, weakness, pale gums or trouble breathing.
• Swelling, redness, discharge or bleeding from the incision.
• Not urinating, or straining.
• Fever or very cool body temperature.

Preparing before surgery

Ask your vet how long to withhold food before the procedure, since most cats fast for several hours, but kittens and diabetic cats may differ. Buy a few small cans of a food your cat loves, and set up a quiet recovery room in advance. Having what you need ready makes the first night calmer for both of you.

When to see a vet

Call your vet whenever your cat's recovery does not look right. Use the US vet directory to find a clinic.

This article is general educational information, not veterinary advice. Every cat is different. If your cat is unwell, or you are unsure about a symptom, diet change or medication, contact your veterinarian.