Most advice about bringing a dog home is written for the day you bring them home. Then day two arrives, the dog won’t eat, hasn’t slept, and has weed on the rug twice, and the advice has run out.
This is about the whole first week. What’s normal, what isn’t, and the handful of decisions that make the next month easier.
The short version
- Keep them on the same food they were already eating for the first couple of weeks.
- Start them in one quiet room, not the run of the house.
- Let the dog approach you, rather than the other way round.
- Same times for meals, walks and bed, every day.
- ID tag on before the first walk, chip registered in your name that week.
What’s in this guide
Before the dog walks in
Do these while the house is still quiet. You won’t want to be hunting for a screwdriver with a nervous dog watching you.
1Pick one room and make it boring
Not the whole house. One room with a door, a bed or a crate, a water bowl, and nothing precious in it. A kitchen or a spare room works. This is where the dog starts, and where they go back to when things get loud.
2Move things at nose height
Shoes, bin, medications, phone chargers, anything with a cable. A stressed dog chews. Removing the object is easier than teaching a rule in week one.
3Ask what food they’ve been eating, and buy that
Even if you plan to switch later. Changing food and changing homes in the same week is a reliable way to produce diarrhoea, and then you can’t tell whether the dog is sick or just unsettled. Switch gradually after two or three weeks, mixing a little of the new into the old over about a week.
4Fit the collar and ID tag before the first walk, not after
Escapes happen in the first days more than at any other time, because the dog has no reason to stay yet. If they’re microchipped, register the chip in your name that same week — an unregistered chip is a number nobody can trace back to you, and the AVMA’s microchip guidance is blunt about keeping registry details current.[2]
Day one
Take them straight to the garden or a quiet patch of grass before going inside. They’ve likely been in a car and holding it.
Then let them into the house on a loose lead and just walk around with them. Don’t call them, don’t hand them toys, don’t introduce anyone. Sit down and let them sniff. Some dogs will explore every corner in ten minutes. Others will find a spot under a table and stay there for hours.
Both are fine.
It’s affection. It feels wrong to ignore a dog you’ve just adopted, but crowding a frightened animal with hands and voices is what causes the shutdown that owners later describe as “he hated us at first.” Let them come to you. They will.
Skip the visitors. No neighbours, no cousins, nobody who wants to meet the new dog. Give it a week.
The first night is usually bad. Whining, pacing, getting up at 3am. Sleeping in the same room as them for the first few nights shortens this considerably. You can move the bed further away later, a metre at a time.
Days two and three
This is when people get worried, so here’s what tends to happen and what it means.
| What you’ll see | What it means | What to do |
|---|---|---|
| Not eating | Very common. A dog that’s just moved house often skips meals for a day or two. | Leave food down for fifteen minutes, take it away, offer again at the next mealtime. Don’t add chicken and cheese to tempt them — you’ll teach them to hold out for better food, and you’ll be doing that for months. |
| Accidents indoors | Expected, even from a house-trained dog. They don’t know where the door is, they don’t know your signals, and stress affects the bladder. | Out first thing, after every meal, after every nap, last thing at night. Clean with an enzyme cleaner, not a normal disinfectant — most household cleaners leave a smell the dog can still find, which marks the spot as the toilet. |
| Sleeping a lot | Normal. Shelter dogs in particular are often chronically short of sleep, because kennels are loud around the clock. | Let them crash. Don’t wake them for cuddles. |
| Shadowing you everywhere | Normal — and so is the opposite, where the dog picks one spot and won’t leave it. | Nothing. Neither one predicts a problem this early. |
| Stiff body, lip licking, yawning when nothing is tiring, head turned away, whites of the eyes showing | Stress signals, not stubbornness. | Whatever you’re doing is too much. Back off and give space. |
Swipe the table sideways to see all columns.
That last row is worth learning properly, because those signals are the earliest warning you get. Heavy panting indoors belongs on the same list — if it carries on past the settling-in period, our guide to why dogs pant at night covers what else it can mean.
Signs to take seriously
Adjustment is not the explanation for everything.
- Vomiting or diarrhoea that continues past a day, or contains blood
- No food for more than two days, or no water at all
- Laboured breathing, or coughing that won’t settle
- Limping, or crying out when touched in one spot
- Complete flatness — a dog that doesn’t lift its head when you enter the room
Days four to seven
The dog starts to work out the shape of your day. Feed at the same times, walk at the same times, and put them to bed at the same time. Predictability is doing more for them right now than training is.
- Keep walks short and quiet. Ten or fifteen minutes on a lead somewhere with no other dogs. The park at 6pm is the worst possible place for a dog in their first week. So is the dog park, which you should leave alone for at least a month — longer for a rescue with an unknown history.
- Book the vet visit. A general health check within the first week or two, even if the shelter checked them. It gets you a baseline, it gets the dog used to the clinic before they need it urgently, and it catches things that were missed. Bring whatever paperwork you were given.
- Introduce one new thing a day at most. The car. A different route. One calm visitor. Not all three on Saturday.
- Don’t rush introductions with other pets. Separate spaces for the first few days, swap bedding so they get used to the smell, then a short meeting on neutral ground with both on leads. Cats need a closed door between them for longer than most people expect — a week or two is not excessive.
What the timeline actually looks like
You’ll see the “3-3-3 rule” repeated across rescue and shelter sites, and organisations including the ASPCA use it to set adopter expectations.[1] It isn’t a scientific finding — it’s accumulated shelter experience.
First 3 days
Decompression. Stress and anxiety are high. Establish routine, stay patient, don’t force interaction.
First 3 weeks
Stress drops and the real personality appears. Basic training with positive reinforcement, calm and consistent boundaries.
First 3 months
Properly settled. Trust is established, habits have formed, and the bond deepens through routine.
Treat it as a rough map rather than a schedule. Some dogs are themselves in a fortnight. Some take longer than three months, particularly if they’ve been rehomed more than once. What matters is direction, not pace: a dog who ate a full meal today and didn’t eat one last Tuesday is going the right way.
The quiet, polite dog from week one starts testing furniture, barking at the postman, and ignoring recall. That’s not a problem appearing. That’s the real dog appearing, now that they feel safe enough to have opinions. It’s a good sign, even though it doesn’t feel like one.
The five things that matter most
If you remember nothing else from this:
- Same food they were already eating, for the first couple of weeks.
- One quiet room, not the run of the house.
- Let the dog approach you, rather than the other way round.
- Same times for meals, walks and bed, every day.
- ID tag on before the first walk, chip registered in your name that week.
Frequently asked questions
How long should a new dog stay in one room?
Usually the first few days, then widen their access gradually as they settle. There’s no fixed number — the signal is the dog, not the calendar. A dog who is eating, sleeping and moving around that room comfortably is ready for one more room. A dog still hiding under the table is not.
My new dog won’t eat. Should I worry?
Not in the first day or two — skipping meals after a house move is very common. Keep offering their usual food at normal mealtimes rather than tempting them with extras. Ring your vet if they refuse food for more than two days, or refuse water at all.
Should my new dog sleep in my bedroom?
For the first few nights, yes — it shortens the whining and pacing considerably. If you’d rather they sleep elsewhere long term, move the bed further away gradually, a metre at a time, once they’ve settled.
When can I take a new dog to the dog park?
Not in the first week, and ideally not for at least a month — longer for a rescue with an unknown history. Early walks should be ten or fifteen quiet minutes on a lead, somewhere without other dogs.
Why is my new dog worse after two or three weeks?
Because they feel safe enough to stop being on best behaviour. Testing furniture, barking and ignoring recall around week three is the real personality surfacing, and it’s a normal part of the 3-3-3 pattern shelters describe. It’s the point to start calm, consistent training — not a sign the adoption is going wrong.
The bottom line
Everything else — training, socialising, the dog park, the long walks you’re looking forward to — waits. You have years for those. You have one first week.
If something about your dog’s behaviour or health worries you and it isn’t on the list above, ring your vet anyway. A phone call costs nothing, and vets would far rather answer a question that turns out to be nothing.
Sources & references
- ASPCApro. Pet Adjustment Periods: The 3 Days – 3 Weeks – 3 Months Guide. aspcapro.org
- American Veterinary Medical Association. Microchipping: FAQs for pet owners. avma.org
This article is general guidance and isn’t a substitute for veterinary advice. If you’re worried about your dog’s health, contact your vet. For more on settling in and living with dogs, browse our dog care section.
