Cat Not Sleeping After Anesthesia: What's Normal?

Name: Cat Not Sleeping After Anesthesia: What's Normal?
Creator: Dr. Zubair Khalid

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-10-02

Most cats are groggy and sleepy right after anesthesia, so a cat not sleeping after anesthesia can seem odd. In many cases, the cat is simply restless, disoriented, or uncomfortable as the drugs wear off, and normal sleep returns within a day. Some behaviors, though, mean you should call a veterinarian right away.

This article is educational and is not a substitute for veterinary diagnosis or treatment.

Quick Answer

Mild restlessness, wobbling, and odd meowing are common for the first 12 to 24 hours as anesthesia wears off.
Keep your cat in a quiet, warm, confined space with soft bedding and easy access to water.
Do not let your cat jump on furniture, stairs, or high surfaces until fully steady.
Call your veterinarian if your cat is struggling to breathe, has pale or blue gums, or will not wake up.
A cat that stays awake and agitated for more than 24 hours, or seems painful, needs a veterinary check.

What Anesthesia Is and Why It Is Used

Anesthesia blocks pain and keeps your cat still and safe during a procedure. It can be local, numbing just one area such as a paw or the mouth, or general, which makes the whole body unconscious [1]. Your veterinarian chooses the type based on the procedure, how long it will take, and where the pain is coming from [1].

Local anesthetics like lidocaine and bupivacaine stop pain signals from reaching the brain, so your cat cannot feel that specific area [1]. For a small wound or a few stitches, your cat may only need a mild sedative plus a local block [1]. General anesthesia is used for bigger surgeries, dental work, and anything requiring complete stillness.

The drugs can be given by injection under the skin, into a vein, or by inhalation [1]. Many cats get a combination, such as an injectable drug to go under and an inhaled gas to stay under. This is why recovery can look different from one cat to the next.

How to Prepare Your Cat

Follow your veterinarian's fasting instructions exactly. Food is usually withheld for several hours before anesthesia, and water may be limited for a shorter time. Fasting lowers the risk of vomiting and aspiration during the procedure.

Tell your veterinarian about every medication, supplement, and herb your cat takes. Mention any previous reaction to anesthesia, even if it was mild. If your cat has heart, kidney, or liver disease, that changes the drug plan.

Set up a recovery room before you leave for the appointment. A bathroom, a large crate, or a small bedroom works well. Remove anything your cat could knock over or get tangled in. Put down soft bedding, a litter box with low sides, and a water bowl.

Keep other pets and young children away for the first day. A cat coming out of anesthesia may not recognize familiar animals and could hiss or swat. Give your cat quiet space to settle.

What Happens During the Procedure

Your cat is examined and often has blood work before anesthesia. The veterinarian calculates each drug dose from your cat's weight and health, so doses vary widely from patient to patient. During the procedure, staff monitor heart rate, breathing, blood pressure, and oxygen levels.

Body temperature matters more than many owners realize. One study of dogs and cats having open surgery found that keeping the room warmer, alone or with active warming, lowered the rate of accidental hypothermia and shortened recovery times [2]. That is why you may see warming blankets, forced-air warmers, or heated tables in the operating room.

Pain control often continues after the procedure. In one report, a cat with severe abdominal pain from acute pancreatitis received three small under-the-skin doses of ketamine along with an ultrasound-guided nerve block, and the added pain relief improved the response to treatment and shortened the hospital stay [3]. This shows how anesthesia and pain medicine work together, not as separate steps.

If your cat is having a cesarean section, the anesthetic plan is built around both the mother and the kittens. A study of cats having emergency cesarean sections compared two induction drugs, alfaxalone and propofol, with isoflurane for maintenance, and tracked kitten survival at birth and 24 hours later [4]. Your veterinarian will discuss which approach fits your cat.

Recovery Timeline and Home Care

Recovery speed depends on the drugs used, the length of the procedure, your cat's age, and body temperature [2]. Young, healthy cats often bounce back faster than older cats or those with other health problems.

Time after anesthesia	What you may see	What to do
First 2 to 4 hours	Heavy sleep, wobbling, dilated pupils, low head carriage	Keep the room quiet and dim, keep your cat warm, do not handle more than needed
4 to 12 hours	Waking in short stretches, restlessness, odd meowing, unsteady walking	Offer a small amount of water, keep the space confined and padded
12 to 24 hours	More alert, may pace or seem unable to settle, appetite slowly returns	Offer a small bland meal if your vet approves, watch for vomiting
24 to 48 hours	Most cats sleep normally and move steadily	Resume normal feeding and litter box access, keep activity calm
48 to 72 hours	Near-normal behavior for most routine procedures	Follow any surgery-specific instructions from your vet

Restlessness is the most common reason owners search for answers. A cat may pace, stare at walls, cry, or refuse to lie down. This can be leftover drug effect, but it can also be pain, a full bladder, or nausea. If your cat had surgery, check the incision for swelling, redness, or discharge.

Watch the litter box closely. Some cats hold urine after surgery because of pain, drugs, or an empty bladder from fasting. If your cat has not urinated within about 24 hours of coming home, that is a reason to call. For more on this, see How Long Can A Cat Go Without Peeing After Surgery.

Appetite often returns slowly. If your cat is alert but not eating, read Cat Not Eating But Acting Normal: How Long Can You Wait? for guidance on timing.

Possible Complications and Warning Signs

Cat Not Waking Up From Anesthesia

A cat that will not wake up, or stays deeply unconscious long after the expected time, needs immediate veterinary attention. This can reflect drug effects, low body temperature, low blood sugar, or a more serious problem. Do not wait to see if it improves on its own.

Cat Stopped Breathing Under Anesthesia

Breathing problems during anesthesia are a known risk, which is why monitoring matters. If your cat comes home and then breathes fast, labors to breathe, or has blue or pale gums, treat it as an emergency. Fast breathing at rest can also signal pain or fluid in the chest. See Cat Breathing Fast: Emergency or Normal? to help judge what you are seeing.

Other Warning Signs

Gums that are pale, white, gray, or blue
Heavy bleeding from the incision or a bandage soaked through
A body temperature that feels very cold or very hot to the touch
Repeated vomiting or vomiting that will not stop
Seizure activity, tremors, or a rigid body
Extreme agitation that puts your cat at risk of injury
No urination for about 24 hours after coming home
Signs of pain such as hiding, growling when touched, or refusing to move

For a deeper look at reactions that can happen around anesthesia, see Anesthetic Complications in Cats: Recognition and Salvage.

Questions to Ask Your Veterinarian

Before you leave the clinic, ask which drugs your cat received and how long the effects usually last. Ask what pain medication to give at home, and how often. Confirm whether your cat needs a recheck and when.

Ask what specific signs should prompt a phone call versus an emergency visit. Ask about food and water timing, activity limits, and incision care. If your cat had a cesarean section, ask about the kittens too, since maternal and newborn care are linked [4].

Limitations and When to Contact a Veterinarian

This article gives general guidance only. Your cat's age, weight, health conditions, procedure, and drug protocol all change what is normal. Individual cases need a veterinarian who knows your cat.

Call your veterinarian the same day if your cat is restless and cannot settle, has not eaten by the next morning, has mild swelling or redness at the incision, or seems uncomfortable despite pain medication.

Go to an emergency clinic now if your cat is not waking up, is struggling to breathe, has blue or pale gums, is bleeding heavily, is having seizures, or has been unresponsive for longer than expected.

For routine questions about behavior, appetite, or litter box habits, a regular appointment is fine. When in doubt, call. Veterinary staff would rather answer a question than treat a crisis later.

Frequently Asked Questions

Is it normal for my cat to be restless instead of sleepy after anesthesia?

Yes, restlessness is a common part of coming out of anesthesia. The drugs can leave a cat disoriented, and some cats pace or cry instead of sleeping. Keep the space quiet and confined, and call your vet if the restlessness lasts more than a day or seems painful.

How long does it take for a cat to fully recover from anesthesia?

Most cats are close to normal within 24 to 48 hours after routine procedures. Full recovery can take longer after major surgery or in older cats. Keeping your cat warm and calm helps speed things along.

Can my cat sleep in bed with me the night after anesthesia?

It is safer to keep your cat in a confined, padded space for the first night. A groggy cat can fall off the bed or try to jump and land badly. Once your cat walks steadily and seems alert, normal sleeping arrangements are usually fine.

Should I wake my cat up to check on it?

You can gently check on your cat every few hours by saying its name or touching a paw. A healthy cat coming out of anesthesia should respond in some way, even if only briefly. If your cat does not respond at all, call your veterinarian right away.

What if my cat vomits after anesthesia?

A single episode of vomiting can happen as drugs wear off, especially if your cat ate too fast. Withhold food for a short time, then offer small amounts of water. Call your vet if vomiting repeats, if your cat cannot keep water down, or if your cat seems painful or dull.

References

Anesthesia. Cornell University College of Veterinary Medicine.
Decreased incidence of perioperative inadvertent hypothermia and faster anesthesia recovery with increased environmental temperature: A nonrandomized controlled study. Veterinary surgery : VS, 2020.
Sub-anesthetic doses of ketamine associated with TAP block in a cat with acute abdominal pain. Topics in companion animal medicine, 2026.
Retrospective evaluation of the induction of anaesthesia with alfaxalone or propofol in cats undergoing caesarean section. Journal of feline medicine and surgery, 2024.