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The 3-3-3 rule for dogs

Written by Astrid | October 21, 2026

Bringing a new dog into your home is a special moment. However, while you may be eager to go on adventures together, your dog mainly needs some time to adjust. New smells, sounds, people and routines can be quite overwhelming. The 3-3-3 rule gives you an idea of how this adjustment period may unfold and how you can best support your dog.

Whether you are welcoming a puppy or giving an adult dog a second home, every dog has their own pace. One dog may quickly feel at ease, while another needs more time to build trust. With sufficient rest, a predictable daily routine and a safe place, you can help your dog feel at home. Certain products can also contribute to a relaxed start.

What is the 3-3-3 rule for dogs?

The 3-3-3 rule describes three important stages when adjusting to a new home:

the first 3 days
the first 3 weeks
the first 3 months

During this period, your dog not only gets to know their new surroundings but also discovers who they can trust and what to expect from their new life. The rule is mainly used for adopted and rehomed dogs, but it can also be a useful guide when you bring home a puppy. It is important to remember that these periods are only a guideline. Some dogs adjust more quickly, while others need more time.

Relaxation for your dog

The first 3 days: everything is new

The first few days are mainly about adjusting and settling down. A great deal changes for your dog in a short time. Even if they come from a pleasant environment, the transition can be quite daunting. You may notice that your dog sleeps a lot, eats very little or prefers to withdraw. Other dogs may be very restless, follow their new owner constantly or react more strongly to sounds and movement.

What can you do?

Give your dog a quiet, permanent sleeping place where they will not be disturbed
Limit visitors and other exciting activities
Keep walks short and choose quiet routes
Maintain fixed times for eating, walking and resting
Let your dog decide when they want to make contact

Do not expect too much from your dog during this period. The most important thing is that they have the opportunity to process all the new impressions. With an anxious or insecure dog, also bear in mind that they may try to escape. A well-fitting safety harness and extra care when opening (and closing) doors are therefore advisable.

After 3 weeks: your dog shows more of their personality

After about three weeks, many dogs begin to recognise their daily routine. They know where their bed is, when they are fed and what happens during a walk. This often leads to greater relaxation and trust. This is also the period when you can discover more and more of your dog’s personality. They may become more playful, seek contact more often or feel confident enough to explore their surroundings further.

At the same time, behaviours may emerge that you did not see at first. These could include barking at visitors, pulling on the lead or struggling to be left alone. This does not automatically mean that your dog is regressing. They may now feel secure enough to show more of their behaviour.

You can find more information about leaving your dog alone here.

What can you do?

Continue to provide a predictable daily routine and gently begin teaching the desired behaviour. Reward your dog when they respond calmly and introduce new experiences one step at a time. For example, practise leaving them alone for short periods, but prevent your dog from becoming distressed.

After 3 months: growing confidence

After about three months, many dogs increasingly feel at home. They know the family members, understand the daily routines and have a better idea of what to expect.

You will often notice that the dog sleeps more peacefully, makes contact more easily and approaches new situations with greater confidence. The bond between you and your dog may also have grown considerably during this period.

However, this does not mean that every dog will be fully settled after three months. Dogs with unpleasant experiences in their past may need longer to feel safe. Continue to pay close attention to your dog’s behaviour and needs.

How can you tell that your dog is beginning to feel at home?

A dog who feels increasingly safe will often show subtle changes in their behaviour. Look out for the following signs:

They sleep peacefully and feel confident enough to withdraw
They eat and drink according to their normal routine
They approach you for contact of their own accord
They show an interest in toys or other activities
They can settle down again after an exciting event
They explore their surroundings with relaxed body language

Always consider your dog’s overall behaviour. One sign alone does not tell you everything. For example, sleeping a lot can also indicate tiredness or a physical health problem.

Common mistakes during the adjustment period

When you bring a new dog into your home, you naturally want to include them in everything. However, well-intentioned activities can unintentionally make it more difficult for them to adjust. A common mistake is doing too much during the first few weeks. Long walks, busy off-lead areas, visits to family and socialising with all kinds of other dogs can lead to an accumulation of stimuli. Starting to leave your dog alone too soon can also cause problems. Build this up gradually and take account of what your dog can cope with.

Remember: socialising does not mean that your dog should experience as much as possible. It is primarily about gaining positive experiences at a pace that suits them.

Additional support with calming supplements

Some dogs need a little extra support to feel comfortable in a new environment. Calming supplements such as Zylkene or products containing L-tryptophan can promote relaxation during stressful periods. Products containing reassuring pheromones, such as the Adaptil collar, can also support your dog while they adjust to their new home. Keep in mind that these products are not a substitute for sufficient rest, a predictable routine and positive guidance. Above all, give your dog time to build trust at their own pace. Discover our extensive range of calming supplements for dogs.

When does your dog need extra guidance?

Not every dog settles in by themselves. Does your dog remain very anxious, panic when you leave or show increasing aggression? It is then advisable to seek professional guidance.

If your dog’s behaviour changes suddenly, ask a vet to rule out physical causes. A qualified dog behaviourist can then help you better understand the behaviour and draw up a suitable support plan.

Give your dog time to feel at home

Above all, the 3-3-3 rule shows that adjusting takes time. By offering your dog rest, clarity and positive experiences, you lay a good foundation for a strong bond. Do not just look at the calendar, but pay particular attention to what your dog is telling you through their behaviour. This allows you to grow towards a familiar home together, at your own pace.

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About the author

Astrid, veterinary nurse at Vetsend

Astrid is a veterinary nurse and works at Medpets as a content specialist, where she uses her many years of hands-on experience to provide pet owners with clear and reliable information. She specializes in rabbit behaviour and enjoys contributing ideas for innovative products and blog posts that meet the needs of both pets and their owners.