First Days with a Rescue Dog: The Decompression Phase
Welcoming your adopted small dog home is an exciting milestone, but it is also a time of significant change for your new companion. Understanding the early adjustment period is key to helping them feel safe and adjust successfully.
General guidance only: This page provides general information to help you support your dog's adjustment. It does not constitute veterinary or professional behavioral advice. If you suspect your dog is unwell, in pain, or showing signs of severe distress, contact a veterinarian promptly.
What Is Decompression?
Decompression is the process of allowing a dog's nervous system to settle after experiencing the stress of a shelter, foster network, or transition. During this phase, your dog may feel overwhelmed. They need time, quiet surroundings, and low stimulation to process their new environment.
A common mistake is introducing the dog to too many people, pets, and environments too quickly. Keep the first week extremely quiet. Avoid taking them to busy parks, hosting visitors, or forcing close physical contact.
The 3-3-3 Rule of Thumb
The 3-3-3 rule is a popular way of describing how some rescue dogs may gradually settle over the first days, weeks and months. It is not a fixed timetable, and individual dogs may adjust faster or more slowly.
First 3 Days
Possibilities: Some dogs may feel overwhelmed, retreat to a quiet space, or show less interest in interaction. They are often observing their new environment.
First 3 Weeks
Possibilities: A dog can begin to settle, follow daily routines more easily, and start showing more of their individual personality.
First 3 Months
Possibilities: Some dogs may develop a secure bond with their family, feel more comfortable in the home, and show confidence in their environment.
Practical Tips for the First Week
- Create a Safe Space: Provide comfortable bedding in a quiet indoor area. Ask the placing rescue what sleeping arrangement and familiar items the dog previously used. Let the dog retreat there whenever they feel overwhelmed, and instruct everyone in the household to leave them alone when they are in their space.
- Maintain a Consistent Routine: Feed, walk, and take them out for toilet breaks at the same times every day. Predictability builds security.
- Keep Walks Low-Key: Avoid busy public areas. Let them sniff and explore quiet spots close to home on a secure lead.
- Avoid Visitors: Give your new dog at least a week to bond with immediate family members before introducing them to relatives, friends, or neighbors.
When to Escalate
Veterinary Concerns
Contact a veterinarian promptly for advice. A sudden behavioural change can sometimes be linked to pain or illness. Seek veterinary guidance immediately if you observe:
- Refusal to eat or drink (do not rely on a fixed waiting period, especially if the dog is very small, young, elderly, has an existing medical condition, is not drinking, or also shows vomiting, diarrhoea, pain, weakness or lethargy).
- Repeated vomiting, diarrhoea, or inability to urinate or defecate.
- Extreme lethargy, difficulty waking, weakness, difficulty breathing, or signs of physical injury.
Behavioural Concerns
If your dog shows escalating fear, persistent distress when left alone, or signs of aggression, seek advice from a qualified, force-free animal behaviour practitioner.
Frequently Asked Questions
Why is my newly adopted dog sleeping so much?
Some dogs sleep more after a stressful transition. Marked lethargy, difficulty waking, weakness, pain or a sudden behavioural change should be discussed with a veterinarian rather than assumed to be normal.
What should I do if my rescue dog refuses to eat?
Contact a veterinarian promptly if your dog refuses food, especially if the dog is very small, young, elderly, has an existing medical condition, is not drinking, or also shows vomiting, diarrhoea, pain, weakness or lethargy. Do not rely on a fixed waiting period. Ask the placing organisation or a veterinarian for advice on appropriate transition diets.
Where should my rescue dog sleep on the first night?
Provide comfortable bedding in a quiet indoor area. Ask the placing rescue what sleeping arrangement and familiar items the dog previously used. Keep them indoors; small breeds do not have the body mass to sleep outside in South African weather extremes.
Integrating Your Dog with Other Pets?
If you have existing dogs or cats, preparing for a safe, structured introduction is essential.
Last reviewed: July 2026 | Next review due: January 2027 | Sources: American Veterinary Society of Animal Behavior (AVSAB) Position Statement on Humane Dog Training (avsab.org, accessed July 2026); South African Veterinary Association (SAVA) general veterinary guidelines (sava.co.za, accessed July 2026).