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Introducing a New Dog to Existing Dogs


Bringing a new dog into your home can be a very exciting time, but it is also a stressful situation. You may have children or existing dogs or pets in the home, and might not be sure how your latest addition will fit in with current family members.

When it comes to introductions, advance preparation and patience will be paramount. Make sure your current dogs/animals are able to cope peacefully and happily around dogs before you decide to bring another dog home. Multi-dog households can work very well, but they can also lead to serious fights and potential injury if proper management and guidelines are not in place.

If you have children in the home, you need to teach them how to stay safe around dogs, and make sure your new dog will be comfortable with children.


Introductions should occur slowly and should never be forced. Dog to dog introductions are best done on neutral territory, and I recommend that your current dog(s) meet the new dog at least twice so they can check each other out and interact, as well as taking the dogs for a walk together, before bringing the new dog home. Minimise face-to-face greetings (or those through fences) as much as possible, as these can get tense quickly.

You should stay calm at all times during these initial introductions, as any tension can be felt by the dogs. If you are having trouble with introducing a new dog into your home, then you should contact a qualified animal behaviourist or dog trainer for assistance before the situation gets out of control.


If the existing dog is a male, then it is wise to introduce a more submissive female into the mix and vice versa. Inter-female aggression is very common, as are fights between competing males, and while dogs of the same sex can co-habit peacefully, it is often better to mix the sexes up.

It is advisable that your second dog is close in age, size or temperament to your existing dog, making sure their energy levels match. If a puppy is brought into a home with an established older dog, every effort must be made to keep puppy’s desire to play with the older dog to a minimum. In some cases a younger dog will breathe new life into an older one, but age gaps can also be the cause of major irritations! My preference for age difference is 4 to 6 years, depending on the breeds of the dogs.

Initial introductions need to be made on neutral territory with both dogs on loose leashes, so that they have the ability to interact without the frustration of being held too tightly. If the initial meeting goes well, both dogs should be allowed to interact off leash in a safe area, giving them freedom to form a relationship.
Established dogs can become jealous when too much attention is given to the new addition. It is extremely important that both dogs get equal attention as well as having quality one-on-one time with the owner.
Feeding the dogs separately will ensure that there are no fights over food bowls, and that each dogs’ dietary requirements are being met. High value chews, bones or toys need to be given to the dogs in separate rooms or areas, as even the best of friends can fight over valuable resources.

Rewarding the existing dog when he or she behaves well around the new arrival will show the dog that the new dog’s presence means good things happen. 

Walking the dogs individually a few times a week will also assist in strengthening the bond with you, as this is each dogs “special time” just with you! And you will get to know your new dogs’ personality even better! 
Brushing or massaging your dogs improves the bond you share with them, and again gives them one on one time just with you! 


Having your existing dogs secured in your vehicle is essential for their safety (and it is also a legal requirement in NSW). 
Putting your new dog into a good sized crate that is secured in your vehicle will help the dog to not panic, or injure itself, plus has the advantage of minimising any car sickness mess. 

The use of a pheromone collar (such as Adaptil) on your new dog may really help him during the travelling and the first few weeks of settling into your home. My advice is to put it on at least an hour before travel is to commence so it has time to activate. 

You may need to pull over if the dog is not travelling well. For some rescued dogs, travelling in the car can be traumatic and they believe they are going to be dumped or surrendered, as this may be what happened to them once before.


Take your existing dogs in first, and put them in the back yard, then bring the new dog inside the house, and let him check out the new environment. Set up his/her crate/pen in a safe yet quite area.

Then swap, by bringing the existing dogs in, and taking the new dog out to explore the yard freely.

You can then let then all interact freely in the yard under your supervision to ensure that there is no territorial behavior going on, and if play starts to get intense, calmly intervene by bringing the over-excited dog inside to calm down.

Your new dog may not be house trained, so you need to be prepared keep a close watch for behaviours that indicate toileting is needed. He should however learn quickly from your other dog(s).
Some rescued dogs may have some ongoing behavioural issues due to the way they were treated at some point in their life. They may have been abused or starved, and you might be surprised at some of the triggers.
It can take up to three months for your rescued dog’s personality to develop and shine – he/she is finally allowed to be themselves, and develop their character in a kind, loving and respectful home environment.

Should you need any assistance with any of the above, or something totally unexpected occurs, be sure to contact a qualified professional dog behavioural trainer who has first-hand experience with adopting and working with a rescued dog. 

For more details, visit the Dogology® website, where you can enrol your dog in my new Rescued Dog Program!

Janene Branc, Dogology® 2015

Janene Branc has been training dogs since 1995. She completed the Certificate IV in Dog Behavioural Training with the Delta Society of Australia in 2002 and the PetTech PetSaver Certificate course in 2012. She has attended many seminars on Agility, Obedience, Canine Musical Freestyle, Ethology & Canine Behavioural Management. She has been the NSW Regional Representative for the Association of Pet Dog Trainers (Australia) since 2010.

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