Is it normal for a new cat to hide and not eat?

Why a new cat hides

To a cat, a new home is unfamiliar territory full of unknown smells and sounds. The Feline Veterinary Medical Association (FelineVMA, formerly the American Association of Feline Practitioners) explains in its caregiver guide to environmental needs that cats are territorial, feel threatened when their territory is disturbed, and need to protect themselves from perceived dangers, which can include unfamiliar people and unfamiliar environments. Retreating under a bed or into a box is how a cat does that.

The same guide treats a hiding place as a basic need, not a problem to fix. Every cat needs a safe, secure place to retreat to, ideally one it can enter and leave from at least two sides. Most cats prefer a space just big enough for themselves, with sides around it, raised off the ground. A cardboard box, a cat carrier, or a raised perch all qualify.

So a cat that spends its first days under the bed is usually doing exactly what the guidance expects. The FelineVMA's guide to introducing a new cat puts it plainly: let the cat choose when to come out, explore, and become comfortable.

How long the hiding lasts

No veterinary body publishes a fixed number of days. Cats differ in how much they enjoy people at all, and the FelineVMA notes that this depends to a large extent on whether a cat was introduced to humans during its socialization period as a kitten, from 2 to 9 weeks of age. That is one reason two newly adopted cats can behave so differently in the same week.

For homes that already have cats, the FelineVMA's step-by-step introduction can take a few days to a few months, and sometimes longer, and it tells caregivers not to move to the next step until each cat is comfortable with the current one. The same patience suits a single cat learning a single room. Look for direction rather than a date: short trips out of the hiding place, food disappearing from the bowl, a used litter box, a glance at a toy.

Not eating is not something to wait out

Hiding and not eating often show up together, but they are not the same thing. Cornell University's Cornell Feline Health Center describes a sustained loss of appetite, which vets call anorexia, as a sign of many different health problems, including diabetes, kidney disease, hepatic lipidosis, and the pain of dental disease. It can also have psychological roots: a cat may dislike a new food, or be upset when another animal moves into its home. Cornell adds that food refusal is relatively frequent in cats placed in boarding kennels, which is another sudden change of surroundings.

What makes it urgent is timing. According to Cornell, anorexia can have a severe impact on a mature cat's health if it persists for as little as 24 hours. For a kitten younger than six weeks, going without food for just 12 hours can pose a lethal threat. Cornell is also clear that the condition is never the result of a cat simply deciding not to eat, and that a cat that is not eating deserves a full veterinary workup.

In practice, a nervous cat that eats a little overnight is in a different situation from a cat that has eaten nothing since it arrived. The first can be given quiet and time. The second needs a call to the vet, even if it otherwise seems calm.

What helps in the first days

Start small. One quiet room with a hiding place, food, water, and a litter box gives the cat a territory it can learn quickly. Cornell's guide for new cat owners says food and water dishes should be kept far away from the litter box, and that you should find out what the cat has been eating and keep feeding some of the old food while you switch gradually.

Feed in a way that suits a cautious animal. The FelineVMA's guide to feeding says cats prefer to eat alone and to eat several small meals a day, and that a cat trying to avoid a stressful encounter may eat too fast to get back to its safe space, or eat too little. Its plainest advice applies here: food needs to be located where your cat can reach it.

Let the cat set the pace of contact. The FelineVMA asks caregivers to remind guests and everyone in the household not to force interaction, and to let the cat initiate, choose, and control the kind of contact it gets. Interactive toys that mimic prey, such as a toy mouse pulled across the floor or feathers on a wand, offer a low-pressure way to engage.

Mind the smells. Cats mark places where they feel secure by rubbing their face and body on them, and the FelineVMA advises against cleaning that scent away, especially when a new cat is introduced. It also lists scented products, cleaners, and detergents among smells cats can find threatening, and says synthetic facial pheromones can have a calming effect in a stressful or unfamiliar situation.

Common mistakes in the first week

Pulling the cat out of hiding. It takes away the one thing that makes the room feel safe. Leave the hiding place alone and let the cat come out on its own terms, as the FelineVMA recommends.

Inviting people over to meet the cat. The FelineVMA's advice not to force interaction applies to every cat, and it matters most while the cat is still learning the house.

Switching food on day one. Cornell suggests continuing some of the cat's previous food while you change over gradually.

Scolding a hiss. Cats use vocalizations to communicate unhappiness when they feel threatened, according to the FelineVMA, and its introduction guide tells caregivers not to discipline a cat that hisses or growls. Add distance instead.

Waiting out a cat that will not eat. Cornell's warning about 24 hours for adult cats, and 12 hours for kittens under six weeks, is the reason not to.

When to call the vet

Cornell recommends that any new cat be checked by a veterinarian as soon as possible after it comes home. If you already have cats and the newcomer's health history is unknown, Cornell advises keeping it separate from your other cats until the vet has examined it, and says cats with an unknown history should be tested for feline leukemia virus (FeLV) and feline immunodeficiency virus (FIV).

Beyond appetite, Cornell lists signs of illness that call for a vet: persistent vomiting, diarrhea, discharge from the nose or eyes, sneezing, weight loss, straining or pain when urinating, blood in the urine, difficulty breathing, and lethargy. The FelineVMA gives a reason to take small changes seriously: cats often do not show obvious signs of stress, pain, or sickness.

If it helps to have the first weeks laid out by day, Cat90 shows one short reassurance card matched to your day count, including a day 3 note on hiding and a day 5 note on appetite, and those two say when it is time to check with your vet.

This article summarizes published guidance from the FelineVMA and Cornell University's Cornell Feline Health Center. It is not veterinary advice. If your cat is not eating, seems unwell, or you are unsure, contact your veterinarian.

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