The first month is when most adoptions are quietly decided — not by whether the dog is a good dog, but by whether the household expected what actually happens.
Almost nothing in week one tells you who your dog is. Here is what is normal, what is not, and what to do about both.
The short version
- Expect roughly three days to decompress, three weeks to learn your routine, three months to feel at home.
- A quiet, boring first week does more good than anything else you could do.
- The dog you meet in week one is not the dog you will have in month three.
- Rushing introductions is the single most common cause of an early return.
Before the dog arrives
Having this ready matters, because day one is not the time to be driving to a store.
| Item | Why it matters for a Westie | Have it ready? |
|---|---|---|
| Well-fitted harness | A frightened terrier can back out of a collar in seconds | Before day one |
| Six-foot fixed leash | Retractables give no control near wildlife | Before day one |
| Crate or covered bed | A den to retreat to, never used as punishment | Before day one |
| ID tag and microchip update | The highest-risk period for escape is week one | Before day one |
| Two weeks of current food | Diet changes plus stress equals stomach upset | Before day one |
| Baby gates | Lets the dog observe without being cornered | Before day one |
| Enzyme cleaner | House training often regresses under stress | Before day one |
| Vet appointment booked | A check within the first two weeks | First week |
Week by week: what to expect
| Period | What you will probably see | What to do |
|---|---|---|
| Days 1–3 | Shutdown or overexcitement, poor appetite, sleeping heavily, accidents indoors | Keep it boring. No visitors, no outings, short leash walks only |
| Week 1 | Testing the space, following you room to room or hiding, disrupted sleep | Fix a routine and repeat it. Same times, same doors, same walk |
| Week 2 | Appetite returning, first play, first real eye contact | Begin short training sessions. Introduce one new thing at a time |
| Week 3 | Personality emerging — including the terrier opinions | Start addressing behavior now that the dog is settled enough to learn |
| Week 4 | Settled routine, bonded to one person, still wary of novelty | Widen the world gradually. Consider a training class |
Battersea’s guidance on settling a new dog into your home is a good companion to this, written from a large rehoming charity’s experience.
What is normal and what needs a vet
Telling stress apart from illness is the common worry. This is the rough dividing line.
| Sign | Usually normal settling | Call the vet if |
|---|---|---|
| Not eating | Skipping meals for 24–48 hours | Nothing eaten for 48 hours, or any vomiting with it |
| Loose stool | Soft for a few days from stress or water change | Blood, black stools, or lasting beyond three days |
| Hiding | Retreating to a bed or crate for hours | Unwilling to move at all, or hiding plus not drinking |
| Scratching | Some itching as the coat and skin settle | Raw skin, hair loss, smell, or head shaking |
| Panting | When excited or warm | At rest, in a cool room, with no exertion |
| Coughing | An occasional cough after pulling on a leash | Persistent dry cough, especially in an older Westie |
| Limping | Stiff after a long first walk | Lasting more than a day, or skipping on a back leg |
The right-hand column overlaps heavily with the conditions this breed is genuinely prone to, which is worth reading before the first vet visit.
The mistakes that cause early returns
- Too many people, too soon. Week one is not the time.
- The dog park on day two. An unsettled terrier with no recall and no bond is not ready for off-leash dogs.
- Free run of the house immediately. Space is not a kindness yet.
- Reaching into the bed. The one safe place stays inviolable.
- Judging temperament in week one. You are meeting a stressed dog.
- Changing food straight away. Transition over ten days, if at all.
Introducing a resident pet
Westies generally live well with other dogs, but first impressions are hard to undo. Slow is faster here.
- Meet on neutral ground, both on leash, walking parallel rather than face to face.
- Keep the first sessions short and end them while both dogs are still relaxed.
- Feed separately for at least the first month.
- Pick up all toys and chews initially, then reintroduce them one at a time.
- Cats need weeks, not days. Some Westies never become safe with cats.
If the dog you are considering has been assessed with cats or other dogs, that assessment appears on the Westies currently available for adoption. Terrier chase instinct is covered properly in our guide to Westie barking, digging and prey drive.
Frequently asked questions
What is the 3-3-3 rule for rescue dogs?
A rough guide: about three days to decompress from the stress of moving, three weeks to learn your routine and start showing personality, and three months to feel fully at home. It is a pattern, not a schedule.
My new rescue dog will not eat. Is that normal?
Skipping meals for the first day or two is very common. If nothing has been eaten in 48 hours, or if there is vomiting, lethargy or diarrhea alongside it, call your vet.
Should I crate a new rescue Westie?
A crate or covered bed used as a safe retreat helps most dogs settle. It should never be used as punishment, and the door should stay open unless the dog is already crate-trained.
How long before a rescue dog shows its real personality?
Usually two to three weeks for the outline, and around three months for the full picture. Dogs from kennel or breeding backgrounds take considerably longer.
When can I let my new Westie off leash?
For most Westies, only in securely fenced areas, and not for several months at minimum. The breed’s prey drive means many are never reliably off leash in open ground.
If the first month is harder than you expected
Call the rescue that placed the dog. A good one expects to hear from you and would much rather help in week two than take a dog back in month three. If the dog came from a breeding kennel, the timeline for a retired breeding Westie runs to months rather than weeks.
If you are still deciding, our guide to adopting a Westie in New England explains the process, and our honest guide to whether Westies suit your household covers the temperament behind the settling.