Most new cat owners spend the first few days worried about the same thing: the cat they brought home has vanished under the bed and won't come out. That's normal. Cats are creatures of territory, and a move to a new home means losing every smell, sound and hiding place they knew. The first week isn't about bonding. It's about giving your cat a small, safe space and letting them decide when they're ready for more. Here's how to set that up, what to expect each day, and the few signs that mean it's time to call the vet.
1. Before Day One: Set Up a Safe Room
The single most useful thing you can do is start your cat in one small, quiet room rather than giving them the run of the house. A spare bedroom, a home office or even a large bathroom works. A whole house is overwhelming to a cat who doesn't know where the exits, the people or the other animals are. One room they can learn completely feels safe much faster.
Have the room ready before you bring your cat home:
- A litter box, placed away from the food and water. Cats don't like to eat next to their toilet.
- Food and water bowls, with water kept fresh. Some cats drink more from a wide, shallow bowl or a fountain.
- Hiding places, such as a covered bed, a cardboard box on its side, or a blanket over a chair. A cat who can hide in a spot you've chosen won't need to wedge themselves somewhere you can't reach.
- Something to climb or perch on, like a cat tree or a cleared shelf near a window. Height helps many cats feel secure.
- A scratching post, so the first thing they learn to scratch is the right thing.
- A few simple toys, such as a wand toy and a couple of balls.
Block the hard-to-reach spaces. Gaps behind the washing machine, under a recliner, inside a box spring, or a hole into the wall can all swallow a frightened cat. Close them off now, or you may spend day two with a flashlight and a lot of patience.
2. Cat-Proof the House, Even Before They See It
Your cat will explore the rest of the home soon enough, and some everyday things are more dangerous to cats than people expect:
- Lilies. Every part of true lilies and daylilies, including pollen and the water in the vase, can cause kidney failure in cats. Keep them out of the house entirely. Our list of toxic foods for dogs and cats covers what to keep off the counters too.
- String, thread, hair ties and ribbon. Cats love to play with them and can swallow them, which can cause a serious blockage. Put them away.
- Cords and blind cords. Tie them up or tuck them away from curious teeth and paws.
- Windows. Check that every screen is secure. A loose screen is a common way for an indoor cat to get out.
- Medications and cleaning products. Store them in closed cupboards.
3. Bringing Your Cat Home
Bring your cat home in a secure, hard-sided carrier, never loose in the car or in your arms. A frightened cat can bolt the moment a car door opens. Try to make the trip on a day when you'll be home for the next few days, and avoid having visitors over that first week.
Carry the carrier straight to the safe room, close the door, set the carrier down and open it. Then let your cat come out in their own time. Don't tip them out or pull them from the carrier. Some cats walk out within minutes. Others stay inside for hours, and that's fine. Sit quietly in the room for a while if you like, then leave them to explore.
Before you leave the shelter or rescue, ask which food and litter your cat has been using, and start with the same ones. Changing everything at once is a lot for a cat's stomach and habits. If you want to switch food, do it gradually over about a week by mixing in a little more of the new food each day.
4. Days 1 to 3: Hiding Is Normal
Expect your new cat to hide, possibly most of the time, for the first few days. Some confident cats are curling up on your lap by the evening. Shy cats, or those who've had a hard time at the shelter, may stay out of sight for a week or more. Neither is a sign anything is wrong.
What helps during these first days:
- Visit often, but briefly. Sit on the floor, read or scroll your phone, and talk softly. Let your cat get used to you being around without anything being asked of them.
- Let them come to you. Don't reach into a hiding spot or pull them out. Offer a hand at nose height and let them sniff it if they choose.
- Keep the house calm. Loud music, vacuuming outside the door and lots of new people can all slow things down.
- Check the essentials quietly. Notice whether food is going down and the litter box is being used. Most shy cats eat, drink and use the box at night when the house is quiet.
Many shelters talk about the 3-3-3 rule: roughly three days to decompress, three weeks to learn the routine, and three months to feel fully at home. It's a rough guide, not a deadline, but it's a helpful reminder that the first week is only the start. Our guide to adopting from a shelter explains it in more detail.
5. Days 4 to 7: Building Trust
Once your cat is eating, using the litter box and starting to come out when you're in the room, you can gently do a bit more:
- Play every day. A wand toy lets a shy cat play from a safe distance, and play is one of the fastest ways to build confidence. A few short sessions are better than one long one.
- Use food as a friend. Feed at the same times each day and stay in the room while they eat. A few treats offered from your hand go a long way.
- Learn their petting preferences. Most cats prefer short strokes around the cheeks, chin and the base of the ears. Stop if their tail starts flicking or their skin twitches; that's a polite "enough for now".
- Let them explore further when they're ready. When your cat seems relaxed in the safe room (lying stretched out, greeting you at the door, exploring rather than hiding), open the door and let them investigate one area at a time. Keep the safe room set up as a place to retreat to.
If your cat isn't ready by the end of the first week, that's fine. Some cats take two or three weeks before they want more space. Go at their pace, not the calendar's.
6. If You Have Other Pets
Keep your new cat completely separate from other pets for at least the first several days, and often longer. Rushing a first meeting is the most common reason introductions go badly, and a bad start can take a long time to undo. In the meantime:
- Swap scents. Rub a soft cloth on each animal's cheeks and leave it near the other's food, or swap their bedding, so they get used to each other's smell first.
- Feed on opposite sides of a closed door, so the smell of the other animal is linked with something good.
- Move to seeing each other through a baby gate or a slightly opened door only once both are calm with the smells.
Some hissing at first is normal. If either animal is staring, stalking, growling or panicking, go back a step and take it more slowly. Ask the shelter or rescue for advice too; they often know a lot about how your cat has behaved around other animals.
7. The First Vet Visit and When to Call Sooner
Book a vet visit within the first week or two, even if the shelter has already done an exam. Bring every bit of paperwork you were given, including vaccination and spay or neuter records. The vet will check your cat over, plan any vaccines that are due, and give you a baseline for your cat's weight and health.
Update the microchip while you're at it. If your cat is chipped, make sure the registration is in your name with your current phone number. Shelters and vets scan found cats, and a chip with old details won't get them home. An indoor cat still benefits from a breakaway collar with an ID tag.
Stress can cause some changes in the first week, but a few things shouldn't wait for the routine appointment. Call your vet straight away if your cat:
- Hasn't eaten anything for about a day. Cats who stop eating can become seriously ill more quickly than many people realize.
- Is straining in the litter box or hasn't urinated in a day. A urinary blockage is an emergency, particularly in male cats.
- Has repeated vomiting or diarrhea, or any blood in either.
- Is sneezing heavily with thick discharge from the eyes or nose, breathing with effort, or seems very lethargic. Mild sneezing is common in cats fresh from a shelter, but these signs need a check.
This isn't a replacement for your vet's advice. If something seems off and you aren't sure, it's always worth a phone call.
8. Keep Your Cat Inside, and the Doors Closed
A newly adopted cat doesn't yet know that your home is their home. If they slip out in the first few weeks, they're in an unfamiliar area with no idea how to get back, and a frightened cat usually hides silently nearby rather than coming when called.
- Watch the doors. Make sure everyone in the household knows the cat is new, and check where the cat is before opening an outside door.
- Keep a newly adopted cat indoors for at least the first few weeks. Many owners keep cats indoors for good, which protects them from traffic and other dangers.
- Have a photo ready. Take a few clear photos of your cat in the first week, including any markings. You'll want them if your cat ever does go missing.
If it does happen, start searching right away, close to home. Our guide to finding a lost cat explains why the search is so different from looking for a dog, and what actually works.
Still Looking for Your Cat?
If you're reading this before you've adopted, you can browse cats for adoption by city or state, or find shelters and rescues near you and visit in person. Ask the staff how each cat behaves in the shelter, whether they've lived with other pets, and what they're eating. Those answers will make your first week a lot easier. And if you're open to an older cat, our guide to adopting a senior pet explains what an older cat can offer a first-time owner.
