How to Introduce a New Pet to Your Current Pets

Pets are a major facet of modern life. Pet ownership is on the rise, with many people having a dog or cat at some point in their lives. Most pet parents don’t stop at just one pet at a time – after all, one of humans’ greatest features is the capacity for infinite love and caring. However, introducing a new pet to your existing ones can be a complex process, requiring patience, planning, and a deep understanding of animal behaviour. Successfully facilitating this process can lead to a harmonious household, making it worth the effort. 

Before the Introduction

Understand Your Pets’ Personalities

Every pet is unique and has its personality, energy level, and temperament. Your current pets may be social and outgoing or shy and reserved. On the other hand, your new pet may be an excitable Dachshund puppy or a laid-back Persian cat. Understanding each pet’s personality is vital to predicting their reactions and planning the introduction accordingly. Don’t worry, if you got your new fur buddy through the proper channel, your trusted registered dog breeder can help.

Set up Separate Spaces

Before you bring the new pet home, prepare separate spaces for each pet. This should ideally be a separate room where each pet can feel safe and secure. This space will also serve as a boundary and prevent them from immediately getting into each other’s territory, which might trigger territorial behaviours.

Vet Visit

Before the introduction, ensure that your new pet has been to a vet and is in good health. You don’t want to risk transmitting any diseases to your current pets. Ensure that all pets are up-to-date on their vaccinations.

The Gradual Introduction Process

Initial Isolation

Once the new pet is home, keep it in its designated space for a few days. This will give it time to adjust to its new environment and will also allow your other pets to get used to the scent of the new pet without direct contact.

Scent Swapping

Scent plays a crucial role in how pets perceive each other. Start by swapping bedding between the new pet and the current pets. This process allows them to get used to each other’s scent without any face-to-face interaction. You could also use a soft cloth to rub on each pet and place it near the other.

Controlled, Supervised Interactions

After a few days of scent swapping, you can begin supervised, controlled face-to-face interactions. Start with short sessions, increasing the length gradually as your pets get more comfortable. During these interactions, keep the new pet and the current pets separated by a baby gate or a clear barrier to ensure safety.

Reinforce Positive Behaviour

During these controlled interactions, reinforce positive behaviours with treats, praises, or toys. If your pets show non-aggressive interest in each other, reward them. This positive reinforcement will encourage them to associate each other’s presence with good things.

Handling Aggression

Understand the Signs of Aggression

Understand and observe signs of aggression in your pets, such as growling, hissing, flattening of ears, raised fur, baring of teeth, and a rigid body. Recognizing these signs early can prevent an escalation.

React Appropriately to Aggression

If aggression occurs, calmly separate the pets without endangering yourself. Do not punish aggressive behaviour as it can escalate the situation or create fear and anxiety. Instead, give them time to calm down and then reintroduce them at a later time.

Consult a Professional

If aggression continues, you may need to consult a professional. This could be a professional trainer or a veterinary behaviourist. They can provide customised strategies and advice based on your pets’ specific behaviours and needs.

Promoting Peaceful Coexistence

Maintain Separate Resources

Even after your pets have adjusted to each other, maintain separate resources like food bowls, water dishes, beds, and litter boxes. This will help prevent territorial disputes and promote peaceful coexistence.

Monitor Interactions

Keep monitoring the interactions between your pets, especially when they are alone together. Look for signs of tension or aggression. While some playfulness is normal, if it escalates, it may require intervention.

Spend Quality Time with Each Pet

Spending quality time with each pet individually can help in maintaining their mental health. This will reassure your current pets that the new pet is not taking their place and the new pet will also feel loved and welcomed.


Introducing a new pet to your current pets is a sensitive and gradual process that requires patience and understanding. If done correctly, it can lead to a peaceful multi-pet household. Remember, every pet is unique, and therefore, this process might take longer for some pets than others. Stay patient, be consistent, and don’t hesitate to seek professional help if required. Your efforts will be rewarded with the joy and companionship that a harmonious multi-pet household can provide.

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