The First 3 Weeks: Routines, First Rules, the Vet Check
Survival mode fades, and your dog begins studying his new life: what happens when? What applies here? And who exactly are you? Now you build the scaffold he'll hold onto for years.
The essentials at a glance
Now routines and kindly consistent rules take shape — from day one exactly as they're meant to stay. Add the get-to-know vet check (for dogs from abroad, with the Mediterranean retest in view) and the first small training steps. And: the thawing dog shows new sides — that's part of the plan.
- Rules apply from day one the way they should apply forever — what pity allows now must be laboriously reclaimed later.
- The vet get-to-know appointment belongs in week two or three: base check, vaccination status, parasite plan — prepared well, it becomes a trust exercise.
- For dogs from abroad: plan the Mediterranean retest — ESCCAP recommends testing around six months after arrival; ask where you stand.
- Staying alone, leash, recall: everything starts from zero, in mini-steps — for an adult dog too.
- “The dog is changing” is the plan: more confidence, first debates and new behaviour show the stress is draining.
This article summarises current professional guidance for orientation and does not replace veterinary advice in the individual case. If your dog is unwell, your vet is the right address.
How do you establish routines and rules?
By living them from the start the way they're meant to stay. The most common adoption trap is well-meant: in the first weeks the poor dog may claim the sofa, the bed, beg at the table — and once normality arrives, the privileges are meant to vanish again. To the dog that isn't normalisation, it's a broken rule: he loses things that were his. So decide now what applies permanently, and follow through kindly.
Consistency doesn't mean severity; it means reliability: the same feeding times, the same walk rituals, the same words for the same things, the same answers from everyone in the household. A dog who can make predictions relaxes — one for whom today's allowed thing is tomorrow's trouble stays in permanent scanning mode.
The radius grows in layers alongside: new walking routes one at a time, first quiet streets, single visitors with a behaviour briefing. The rule of thumb from the Puppy Guide applies here too — one new building block a day, processing rest in between — except your adult dog will tell you more clearly when it's enough.
What happens at the get-to-know vet check?
A base check without drama: heart and lungs, palpation, teeth, ears, weight, a look at the pet passport — which vaccinations are missing, how old is the dog really (dental status tells more than some profiles), what's his body condition? Bring all the rescue's documents plus your observation list from the first days: appetite, stools, anything odd in his gait.
Prepare the appointment like a training session: book a quiet off-peak slot, wait in the car or outside rather than a crowded waiting room, keep a steady treat supply flowing during the exam, and for anxious dogs discuss a muzzle with the practice in advance — calmly conditioned, it is a safety measure, not a punishment. The first impression of the practice shapes every future visit.
You leave the appointment with three plans: the vaccination plan (missing shots are caught up), the parasite plan (deworming or faecal checks, tick and flea protection), and if needed a weight or dental plan. With that, the medical foundation is laid — routine appointments structure the year from here.
Dog from abroad: what's the Mediterranean retest about?
Dogs from the Mediterranean and south-eastern Europe can carry pathogens transmitted there by sandflies and ticks — leishmaniosis, ehrlichiosis, anaplasmosis, babesiosis, heartworm. Many organisations test before departure; a negative test shortly after arrival is not the all-clear, though, because some infections only become detectable months later.
ESCCAP therefore recommends (re)testing imported dogs around six months after arrival — as a so-called travel profile at the vet's. At the get-to-know check, clarify which tests were done when, and put the retest date straight into the calendar. This isn't alarmism: caught early, most of these conditions are well treatable or manageable.
Until then: observe without panicking. Signs like recurring fever, lethargy, lameness, weight loss or skin changes are ambiguous — but with a dog from abroad, mention his origin at every vet visit so the practice keeps it in mind.
Which training topics start now?
The three everyday foundations — in miniature steps, as if your adult dog were a puppy: staying alone via the seconds ladder from the Puppy Guide (an eight-year-old also starts at the closed door, not at two hours), loose-leash walking via stop and reward zone, and a freshly built recall word with jackpot guarantee — deliberately a NEW word, unburdened by his past.
The toolkit is the same as for puppies: marker word, reward at the right moment, short sessions, stop on a success. Adult dogs don't learn worse than puppies — they learn differently: some bring helpful prior knowledge, some bring miswired associations that need patience. What you never know is what a cue used to mean; when in doubt, rebuild rather than repair.
Dog school makes sense from now on — as private lessons or a calm small group, not as a crash course in week one. A good trainer sees you both, sorts the projects by priority, and stops you practising on three fronts at once. For fear or aggression topics: seek behaviour-therapy expertise, and the earlier, the shorter the road.
Frequently asked questions
My dog is suddenly “testing” boundaries — was he pretending before?
The other way round: before, he was too stressed to ask questions. That he now negotiates for the sofa, dawdles on the recall or voices opinions means he feels safe enough to be a normal dog. Answer with friendly consistency instead of disappointment — that's exactly why you set the rules from day one the way they're meant to stay.
When can the dog stay alone?
As far as you've built it — no further. An adult dog also needs the small-step build-up: seconds behind the door, minutes, then more, always below the stress threshold, ideally with camera checks. Some rescue dogs manage an hour after three weeks; others need months. Plan care cover until it truly holds.
Should I keep feeding the shelter's food?
For the first two or three weeks, yes — a food switch on a stressed digestive tract is unnecessary hardship. After that, switch if needed via the seven-day staircase (the principle is in week 9 of the Puppy Guide). Soft stools early on are more often stress than a food problem, by the way.
How many new people and dogs should he meet now?
Fewer than your circle will push for: single calm visitors with a briefing (ignore him, let the dog approach), first dog contacts only deliberately, with known-composed dogs on parallel walks. The dog park and the street festival can wait until well past the three weeks — one good encounter now is worth more than five random ones.
The profile said “house-trained”, but accidents happen. Why?
Because house-training is partly location-bound and stress weakens control. Run the puppy fast-track for two weeks: out after sleeping, eating and playing, praise at the toilet spot, wipe accidents without comment. If it persists — especially frequent small amounts — have a bladder infection ruled out at the check.
Sources
- ESCCAP Germany — dogs from abroad: which tests make sense?
- ESCCAP Germany — leishmaniosis in dogs
- StIKo Vet — small-animal vaccination guideline (catch-up vaccination for unclear status)
Last reviewed on July 27, 2026 by Sufyan Osamah · what that means: Editorial standards
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