The decision was the beginning.

The fortnight before collection shapes the first month more than people expect. The household should agree the rules before the dog arrives, because a dog learns the house rules from day one whether you have decided them or not. Where will the dog sleep? Which rooms are off limits? Who feeds, who walks, what words will you all use for the same commands? A family that answers these questions now avoids confusing the dog later.

Practicalities worth sorting in advance: a vet registration (good practices have waiting lists), insurance arranged to start from collection day, and the equipment that actually matters: a crate sized for the adult dog, a properly fitted collar and lead, and the food the dog is already eating, because collection week is the wrong time to change diet.

If you are collecting a puppy from a breeder, collection day itself has a checklist: paperwork, microchip transfer, vaccination records, and the puppy seen with its mother where it was raised. Your interview pack covers it in full. If you are adopting, ask the rescue for the dog's known history and routines, and plan to keep that routine for the first weeks before changing anything.

What people get wrong at this stage: buying for a puppy rather than the adult dog it becomes, and treating the first night as the start of training. Training starts the moment the dog crosses the threshold.

The honest version: the first week is harder than the photographs suggest, and that is normal. Broken sleep, accidents on the floor, a puppy that cries when left or a rescue dog that hides behind the sofa. None of it means you have made a mistake. It means the dog has just had its world replaced.

The job this week is not training in any formal sense. It is establishing safety and rhythm. Same feeding times, same toileting spots, same sleeping place, same calm responses. A dog that learns the household is predictable becomes a dog that can relax, and everything else builds on that.

Keep the world small. Visitors can wait. The puppy parade around the neighbourhood can wait. For a rescue dog especially, the rule of thumb many rescues give is three days to decompress, three weeks to learn the routine, three months to feel at home, and the first three days mostly mean being left in peace.

Toileting accidents are information, not defiance. Note when they happen and adjust your timings. Crying at night is communication, not manipulation. Comfort is not a training failure.

Call the vet promptly rather than waiting if the dog is not eating at all, has persistent diarrhoea or vomiting, or seems lethargic beyond ordinary tiredness. New owners often wait too long out of uncertainty. Vets would rather see a false alarm.

This is the stage that quietly determines what kind of adult dog you live with. For a puppy, the early weeks of it sit inside the socialisation window, when the dog is forming its assumptions about what is normal and safe. The aim is not to flood the dog with experiences but to make new things boring: traffic, buses, other dogs at a distance, people in hats, the vacuum cleaner. Calm exposure, short sessions, always at a pace the dog can cope with.

Training through this stage is little and often. Five minutes twice a day beats an hour on Sunday. Recall is the one that matters most and the one most neglected. Start it indoors, then the garden, long before you need it in a park. A good local training class is worth more than any amount of internet advice, partly for the dog and mostly for you.

The vet rhythm: completing the vaccination course, then the conversations about neutering timing, which is genuinely breed and dog dependent. The right answer for a Labrador is not the right answer for a Dachshund, and your vet's advice on timing should win over anything you read online, including here.

What people get wrong: declaring victory at four months. The well-behaved sixteen-week-old puppy is not the finished article. It is the calm before adolescence.

Somewhere between six and eighteen months, depending on breed, your obedient young dog will appear to forget everything. Recall evaporates. Selective deafness sets in. The dog tests boundaries it previously respected. This is adolescence, it is neurological rather than moral, and it is the stage at which more dogs are given up than any other.

Knowing that in advance is most of the defence. The dog has not regressed permanently and has not stopped loving you. Its brain is rewiring, its hormones are shifting, and the training that seemed finished needs patient reinforcement, often back on the long line for a while as if the dog were younger. Consistency through this stage is what cements the adult dog. Giving up on the rules now teaches the dog that persistence wins.

This is also when breed traits arrive in full. The herding breed starts herding, the guarding breed starts guarding, the scent hound discovers its nose has opinions. The traits we matched to your household in your consultation show up here as real behaviours that need outlets, not suppression.

If it gets genuinely hard, and for some households it does, the answer is a qualified behaviourist before the situation entrenches, ideally one accredited through a recognised body and working on referral from your vet, who will first rule out pain or medical causes. Asking for help at eight months is wisdom. Struggling alone until eighteen is the common mistake.

And if you are ever, seriously, considering whether you can keep the dog: talk to us first, and talk to the breeder or rescue, who will have agreed to take the dog back. That conversation is not failure. It is what responsible ownership looks like at its hardest.