The short answer
One room, door closed, litter box in one corner and food in the other. Open the carrier and walk away. Expect hiding for three to seven days, and eating overnight before you see it happen. Keep the shelter food for the first fortnight. Register with a Peterborough vet inside two weeks, and save the Kawartha Veterinary Emergency Clinic for after hours. Straining in the litter box with no urine is a same-night emergency, especially in males.
The most common mistake in the first week is kindness applied at the wrong moment.
People bring a cat home, want it to feel welcome, and so they carry it around the house, introduce it to everyone, and keep checking under the bed. From the cat point of view, it has just been removed from everything it knew and dropped into a building full of unfamiliar smells and a stranger who will not leave it alone.
The version that works is almost the opposite. Give the cat one small room, everything it needs, and then largely ignore it. Cats decide a place is safe by observing it undisturbed. Doing less genuinely gets you there faster.
Set Up the Safe Room First
Do this before you leave to collect the cat, so the room is finished and quiet when the carrier arrives. A spare bedroom or a quiet office is ideal. A bathroom works if that is what you have.
- ✓A litter box in a corner away from the food, using the litter the shelter used
- ✓Food and water bowls at the other end of the room
- ✓Two hiding places, a covered bed and a cardboard box on its side
- ✓Something vertical to climb, even a sturdy chair beside a window
- ✓A scratching post or a flat cardboard scratcher
- ✓A worn t-shirt of yours, so your scent becomes normal before you do
Keep the room quiet and dim for the first day or two. A newly adopted cat processes a house move as a genuine threat, and a calm dark space lets its nervous system settle faster than a bright busy one.
How the Week Actually Goes
Every cat runs its own timeline, but the shape is consistent. Measure progress in small signs, a little more food gone, a paw showing from under the bed, not in whether the cat is friendly yet.
| When | What to expect |
|---|---|
| Day 1 | Open the carrier in the safe room and walk away. Do not lift the cat out. Most cats go straight under the bed and stay there, and that is a healthy response rather than a bad sign. |
| Days 2 to 3 | Eating and using the litter box, usually overnight while you are asleep. Sit in the room reading aloud without approaching. Check that food is going down and the box is being used. |
| Days 4 to 7 | Coming out while you are present, taking treats, maybe accepting a chin scratch. Some cats reach this by day two, others take three weeks. Neither is a problem. |
| Week 2 to 3 | Opening the door to the rest of the house, one room at a time, while keeping the safe room set up as a retreat. Do not remove the safe room the moment the cat leaves it. |
| Month 1 to 3 | The real personality arrives. Cats that seemed shy turn chatty, cats that seemed bold get clingier. This is the cat you actually adopted. |
The Emergency Signs to Know Tonight
Most of the first week is about patience. This part is not. A handful of symptoms mean a cat needs a vet the same night, and knowing them before you need them is the difference between a good outcome and a bad one.
Straining in the litter box with nothing coming out is the one to memorise. In a male cat especially, that is a urinary blockage, and it is life-threatening within hours, not days. It does not wait until morning and it does not fix itself.
Also go the same night for: laboured or open-mouth breathing, repeated vomiting, collapse or extreme lethargy, a swollen painful belly, or a cat that has eaten nothing for 24 hours. Phone first and describe what you are seeing.
Peterborough has a genuine 24-hour hospital in town, the Kawartha Veterinary Emergency Clinic at 1840 Lansdowne Street West, 705-741-5832, open 24 hours every day. Save the number and know the route on adoption day, not at midnight.
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See Available Peterborough Cats →Frequently Asked Questions
How long does a rescue cat take to settle in?
Plan for weeks rather than days. A common rule of thumb is three days to stop panicking, three weeks to learn the routine, and three months to genuinely feel at home, and it holds up reasonably well in practice. Some cats compress that into a fortnight and some take longer. The mistake almost everyone makes is deciding after four days that the cat is unfriendly. A cat hiding on day four is a cat behaving exactly as expected.
Why is my new cat hiding all the time?
Because hiding is what a cat does when it is not yet sure of a place, and it is a sign the animal is coping rather than failing. Give it a room with hiding spots and let it use them. Do not drag a cat out from under the bed to reassure it, because that teaches the cat that hiding places are not safe either. Sit quietly in the room instead, talk normally, and let curiosity do the work at its own pace.
What should I set up before the cat arrives?
One room, closed door, everything the cat needs inside it. A litter box in one corner, food and water at the opposite end, two hiding places, something to climb, and a scratching post. A spare bedroom or a quiet office is ideal, and a bathroom works at a pinch. Set the room up before you leave to collect the cat, so the whole thing is finished and quiet by the time the carrier comes through the door.
Should I change my cat food right away?
No. Ask what the shelter or foster was feeding and buy that first, even if you plan to switch. A sudden diet change on top of a house move often causes diarrhoea, which is miserable for the cat and worrying for you. Once the cat is eating reliably and settled, usually after a week or two, switch over across seven to ten days by mixing a little more of the new food into the old each day.
When should I book the first vet visit?
Within the first two weeks for a wellness check, unless something is obviously wrong sooner. Adopted cats arrive vaccinated and altered, and often with six weeks of pet insurance from the Peterborough Humane Society, so this visit is about establishing a relationship with a clinic rather than fixing anything. Phone a Peterborough practice, register as a client, and ask what an annual exam costs while you are on the phone. The point is having somewhere that already knows your cat before the day something goes wrong.
What symptoms mean I need a vet tonight?
Straining in the litter box without producing urine is the one to memorise, particularly in a male cat. That is a urinary blockage and it is a life-threatening emergency measured in hours, not days. It kills through kidney failure and heart rhythm changes, and it does not resolve on its own. Also treat as urgent: difficulty breathing, repeated vomiting, collapse, a swollen painful belly, or a cat that has eaten nothing in 24 hours. Phone a vet first and describe the symptoms.
Where do I go for an after-hours emergency in Peterborough?
Peterborough is well served here, which is not true of every mid-size Ontario city. The Kawartha Veterinary Emergency Clinic at 1840 Lansdowne Street West, reachable on 705-741-5832, is open 24 hours a day, every day of the year, and handles cats. Sort this out on adoption day rather than at midnight, and put the number in your phone. Knowing there is a genuine round-the-clock option in town takes a lot of the fear out of the first week.
My cat is not using the litter box. What now?
Rule out medical causes before you treat it as behaviour, because that order matters. Straining without urinating is an emergency, and a urinary tract problem can present as house soiling. Once a vet has cleared that, look at the setup. Try the litter the shelter used, put the box somewhere quiet and away from the food, avoid covered boxes at first, and provide one box per cat plus one spare. Most first-week accidents come from stress and resolve on their own.
How do I introduce a new cat to my existing cat?
Slowly, and through a closed door for longer than you want to. Keep them entirely separate for the first week, then swap bedding between the rooms so each learns the other smell before they meet. Next feed them on opposite sides of the closed door so good things happen near that scent. Only then try short supervised meetings. Rushing this creates a grudge that can last months. Remember Peterborough caps you at three cats per household, so plan around that limit.
Should I let my new cat outside?
No, especially not in the first weeks. A newly adopted cat has no map of your neighbourhood and no reason to return to a house it barely knows, and cats that get out early are the ones that genuinely disappear. Peterborough also prohibits cats from being at large, so roaming is against the bylaw here, and coyotes work the river corridors. Keep the cat in, escape-proof the doors and windows, and read our indoor versus outdoor guide before any supervised outdoor time.
How do I escape-proof the house?
Check window screens for gaps and make sure they are properly seated, because a determined cat will push a loose screen out of its track. Watch the door as you come in and out, especially in the first weeks. Put the cat in the safe room before movers, trades or a delivery arrive. Make sure the microchip and City cat licence are registered to your current phone number, since together they are what gets a lost cat back to you here.
When should I introduce the cat to the whole house?
After it is comfortable in the safe room, which usually takes one to three weeks. Open the door and let the cat explore on its own terms rather than carrying it around the house. Do this while you are home and the house is quiet. Keep the safe room set up with its litter box and hiding places for at least another few weeks. Cats retreat to the familiar room when the house gets busy, and taking that option away too early undoes progress.
Related Peterborough Guides
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