The arrival of a four-legged friend offers the promise of companionship and joy, but it can also cause stress for pets already living in the home.
Without careful preparation, the introduction of a new dog can lead to anxiety, territorial behaviour, or even aggression between animals.
Adem Fehmi, Canine Behaviour Expert at Rover, has shared his top advice on safely introducing your dog to another pet at home.
How to safely introduce my dog to another pet at home
Why an individual animal’s temperament matters a lot
Adem explained that each dog’s reaction to a new companion depends on factors such as temperament, breed traits, past experiences, and training.
If the new dog has some behaviour challenges, this may need to be addressed beforehand, which may take time, patience and considerable effort.
He added: “Alongside the temperament of each pet, the life stage of the animal can also play a part in how introductions might naturally pan out without any owner or professional intervention.
“The age and developmental stage of both animals can significantly influence how introductions unfold.
“Adult cats may perceive very young puppies differently to mature dogs, and in some cases may display stalking or predatory behaviours towards smaller animals.
“Likewise, young kittens are often more likely to run when approached by a dog, which can trigger a dog’s natural chase instinct.
“Adult cats, on the other hand, are generally more confident and may be more inclined to stand their ground and use clear body language or a defensive swipe to establish boundaries.
“These differences highlight why introductions should always be carefully managed and tailored to the individual animals involved.”
How scent swapping and gradual introductions can be useful
Adem pointed out that behavioural issues around resources can also make introductions more complicated.
He said: “This could include food, toys, sleeping areas, and even people in the home.
“In dogs, these behaviours often present as aggressive reactions should the other pet come near them during these times.”
To ease the transition, Mr Fehmi recommends scent swapping and gradual introductions.
He said: “For any introductions to other dogs or pets, it is important that both individuals are as calm as possible.
“One way to do this is to scent swap, which you can achieve by swapping bedding such as blankets, or swapping the room that each was in.
“This is often a good first step to introducing the animals to each other in a controlled and positive manner.
“It can also allow an owner to assess the initial reactions of each pet and form a positive and controlled plan for moving forwards.”
Create a safe space during the transition
Creating safe and familiar spaces is also important.
Adem said: “If your dog is not used to a safe space, such as a crate, pen, or even designated room, it is always best to introduce and build this in positively prior to the introduction to any other pets.
“This can avoid any added stress being placed on your dog.
“Make spaces familiar and comfortable and start your safe space training slowly – stay close initially and build up over time, working at your dog’s individual pace.
“Tools such as leads and stairgates can also be hugely beneficial, especially in the early stages.”
He also warned that dogs with separation anxiety may need extra support before a new pet is introduced.
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Adem said: “If your dog suffers from separation anxiety it is best to seek the advice of an experienced and accredited behaviourist to help you to overcome this issue prior to any other pets coming into your home, as otherwise keeping introductions safe and controlled can be much harder overall, and more stressful for all involved.
“It is important to ensure that the needs of all animals are fully met at all times, that all are allowed to exhibit natural behaviours, and any stress is kept to a minimum through careful planning and building positive experiences between each individual.
“The process can take time and patience is key.”
Have you had to introduce a new dog to an existing pet at home before? Let us know in the comments.
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