Adopting an Adult Cat: Your First Two Weeks at Home

The carrier is on the floor of your Zagreb flat, the front door has only just clicked shut behind you, and the cat inside has gone completely silent. If you're adopting an adult cat for the first time, this is the moment when one question rushes in: now what?

The answer is calmer than you'd expect. The first two weeks shape everything that follows, and they reward patience over enthusiasm.

This guide walks you through them step by step, from setup to the first signs of trust. Going slowly is the fastest route to a relaxed cat.

Why adopting an adult cat starts with patience, not play

The carrier sits on your living room floor in a Zagreb flat. The door is open. The cat has pressed herself against the back wall and isn't coming out. You're standing there, unsure whether to coax, wait, or leave the room.

Wait. That's the answer.

An adult cat arrives with a personality already formed, and that's a real advantage. You can see what you're getting. But she also needs time to feel safe, and the first two weeks are about security and routine, not bonding on your schedule.

We'll move through it in stages: before arrival, days 1 to 3, days 4 to 7, and days 8 to 14. Every cat settles at her own speed, though. No timeline here is a promise.

The best way to make those first days smooth is to prepare before she ever crosses the threshold.

Before you bring your adult cat home: the new cat safe room checklist

Start with one room. Just one. A spare room or a bedroom with a door that closes works best.

Why so small? Because a new home is overwhelming for an adult cat. Every smell is unfamiliar, every sound is a question. A single room gives them something they can actually take in, and that's the first step toward feeling safe.

Here's what to put in it:

• Litter tray, placed well away from food and water. Covered or open both work, so go with whatever your cat used before if you know.
• Scratching post
• Two hiding spots, like a cardboard box on its side and a chair draped with a blanket
• Water bowl and food bowls
• The carrier, left open in the room so it becomes part of the furniture

Ask the shelter or previous owner what your cat has been eating. Then keep it the same for the first few weeks. A stressed cat doesn't need a stomach upset on top of everything else.

Next, cat-proof the flat. Close or screen balcony doors and windows, and secure any tilt windows (a real danger in city blocks with high floors). Check for gaps behind appliances too, because a nervous cat will find them.

Then check the microchip. Confirm your cat has one and that your contact details on the record are correct. Ask the adoption provider what they've already done and what's left for you to arrange. Your vet can confirm the details, along with any current local rules.

One quick tip for dog owners. Decide where your dog will be during the cat's arrival, and set up a closed door or baby gate beforehand. Sort it out now, not when the carrier's already in the hallway.

With the room ready, the real work begins the moment you walk through the door.

Days 1 to 3: settling a rescue cat into a flat

Carry the carrier straight into the safe room. Close the door. Set the carrier down, open it, and step back. Then leave the cat alone to come out when it's ready. Don't lift, don't coax, don't peek inside. That's the whole arrival.

Keep your visits short and calm. Sit on the floor, speak softly, and avoid staring straight at the cat (a direct stare reads as a threat). Let the cat come to you. If it doesn't, that's fine.

Stick to the food your cat ate before, served at set times in small portions, with fresh water always available. Some cats barely eat on day one. That's common. If appetite doesn't return, the vet section covers what to do next.

Show your cat where the litter tray is, clean it daily, and don't switch litter type suddenly. Familiar smells help.

Keep the room low-stress:

• No visitors
• No loud TV
• No repeated room changes
• Normal household noise, nothing more

What normal looks like: hiding, slow exploring at night, cautious sniffing. It's not rejection. It's a cat doing risk assessment.

A simple day might look like this:

1. Morning: serve a small meal and refresh the water
2. Next: tidy the tray
3. Midday: sit quietly on the floor for 10 minutes
4. Evening: serve the second meal
5. Night: keep the lights low

That's it. Boring is the goal.

Once boring starts to feel comfortable to her, you can begin widening her world.

Days 4 to 14: introducing a cat to a dog and the rest of the household

By day four, you'll start reading the signs. Is your cat eating well? Using the tray? Does the body look loose and relaxed, with the tail up or softly curved? And does she come to the door when you walk past? That's your green light.

Open the door and let her explore one extra room at a time. Keep the safe room exactly as it is, with food, water and bed in place, because she'll want to bolt back there more than once.

Bonding works best in small doses. Try these:

• Short feather-wand or toy sessions, a few minutes at a time
• A few treats from your open hand
• Gentle brushing, if she leans into it
• Sitting quietly and letting her choose your lap (don't lift her onto it)

If you have a resident dog, go slowly. Swap scents first, a blanket each. Then let them see each other through a baby gate. Only after that, try short, calm sessions with the dog on a lead and the cat free to leave whenever she likes. Give her high perches and escape routes, like a shelf or a cat tree. Cats feel safer when they can look down.

Here's the reality check for dog owners. Practise "leave it" and a calm settle on a mat before any meeting happens. Then reward your dog for ignoring the cat. Every relaxed glance away deserves a treat.

A resident cat follows the same logic. Scent first, sight second, then short supervised meetings. Give each cat separate bowls and trays to cut down on tension.

Set the house rules early. Keep windows and balcony doors secured. And allow no unsupervised outdoor access in the first weeks. Later, before you decide anything about outdoor time, check your local rules and your tenancy or building rules.

Finally, don't let the dog's life shrink while the cat settles. Keep the usual walks going, whether that's a stroll along Jarun or a loop through Maksimir. A steady routine keeps your dog relaxed, and a relaxed dog makes a far better first impression.

Even with a careful plan, a few hiccups are almost guaranteed, so it helps to know which ones are normal.

Common worries in the first fortnight

Most early worries have simple fixes. Here's what you'll likely see and what to do about it.

• Hiding for days. Leave your cat alone. Keep your routines steady, put food and water nearby, and give it more time.
• Skipping the litter tray. Check that the tray is clean, the spot is quiet, and the litter suits your cat. Then keep all three consistent. If it continues, see the vet section.
• Scratching furniture. Place a sturdy scratching post near where your cat sleeps and rests. Redirect it to the post instead of scolding.
• Night-time zoomies. Schedule a play session and a meal in the evening. A tired, fed cat settles for the night.
• Avoiding the dog. That's normal early on. Slow the introductions down rather than forcing contact.

One last thing. A calm, repeatable routine solves more problems than any product you can buy.

Some signs, though, deserve a professional's eye rather than another day of waiting.

When to call your vet

Book a check-up within the first week or two. Your vet can look your new cat over, talk through vaccinations and parasite prevention, and go through any records from the shelter. This is general guidance, not a diagnosis.

Call your vet if your cat:

• Won't eat or drink
• Vomits repeatedly or has diarrhoea that persists
• Strains in the litter tray or cries while trying to pass urine
• Seems lethargic or has laboured breathing
• Suddenly behaves differently

Also ring about eye or nose discharge, repeated sneezing, limping, or signs of pain when touched.

If something looks urgent, or you're simply unsure, phone your vet or an emergency service. Don't wait. Save the number before your cat arrives.

Bring notes to the appointment: what your cat eats, how often it uses the tray, and any changes you've noticed.

And once the vet visit is done, it's worth stepping back to see how far you've come.

How long for an adopted cat to settle in: what the next few weeks look like

Two weeks in, look at how far you've both come. Safe room. Quiet routine. Slow, curious exploring. Careful introductions. That's real progress, even when it felt like nothing was happening.

Trust builds in small moments. A slow blink from across the room. A tail held high as she walks toward you. Falling asleep in the same room (that one's huge). Keep a simple note each day on appetite, hiding, play, and affection. Patterns will show up, and your vet will appreciate them.

And here's the reward. An adult cat arrives with a settled personality. She's already chosen to trust you.

Your next step before the carrier comes through the door

Before your cat arrives, print or save the safe room checklist above and sketch out your first three days on paper: when she eats, when you visit, and where the dog will be. A written plan makes it much easier to stay calm when the real day comes.

Book that first vet visit now, and save your vet's number in your phone today rather than during a worry at midnight. If a friend is thinking about adopting an adult cat, share this guide with them too.

Keep it calm, keep it consistent, and let the cat set the pace.