How Do I Get My Cat To Stop Hissing At My New Kitten?

Are you a new cat owner eagerly awaiting the arrival of your new kitten, only to be met with hissing and aggression from your resident cat? Don’t worry; this is a common issue that many cat owners face. As a cat behavior expert, I understand how stressful this situation can be for both you and your cats.

Hissing is a natural response for cats when they feel threatened or uncomfortable. However, it’s crucial to address this behavior as soon as possible to avoid any long-term tension between your furry friends. In this blog post, I will share practical and effective tips on how to introduce your new kitten to your resident cat and stop the hissing behavior once and for all.

The introduction process takes time and patience, but with the right tools and techniques, you can create a peaceful home for both cats. We’ll cover everything from creating a safe space for each cat to scent swapping and gradual interactions.

Don’t let hissing discourage you from fostering a loving relationship between your cats. With my expert advice, you’ll be able to alleviate any tension and create a harmonious household in no time. So sit back, relax, and read on to discover the best ways to get your cat to stop hissing at your new kitten.

Establishing Territory for Each Cat

There are ways to establish territory for each cat and create a peaceful coexistence.

The first step is to consider the layout of your home. Try to provide separate rooms for each cat so they can get used to each other’s scent without direct contact. This way, each cat will have their own space where they can retreat if they feel overwhelmed or threatened.

Apart from separate rooms, it’s important to provide each cat with their own resources, such as food and water bowls, litter boxes, and toys. This will prevent competition between the cats and reduce the likelihood of territorial disputes.

Cats love to climb and observe their surroundings. You can satisfy this need by providing high perches like cat shelves or tall furniture such as bookshelves. With their own elevated space, each cat can observe the other without feeling threatened.

Playtime is also crucial for cats to burn excess energy and reduce aggressive behavior towards each other. Make sure to provide ample opportunity for play and exercise.

Remember, positive reinforcement is key when encouraging good behavior from your cats. Reward them with treats or affection when they interact peacefully to reinforce positive associations.

If you’re still facing challenges, don’t hesitate to seek help from a veterinarian or animal behaviorist. They can provide additional guidance on how to manage the situation and ensure the safety of both cats.

Gradually Introducing the Cats to Each Other

Introducing cats to each other can be a nerve-wracking experience, but it doesn’t have to be. By taking things slowly and following these steps, you can help your feline friends form a positive relationship with each other and live together harmoniously.

Step 1: Keep Them Separated

The first step is to keep your cats separated for the first few days. This allows them to get used to each other’s scent without any direct contact. You can swap their bedding or toys so that they can smell each other’s scent. It’s also important to give each cat their separate space, such as separate rooms or enclosures, during this initial stage. Think of it as giving them some alone time to adjust to their new housemate.

Step 2: Introduce Through a Barrier

Once your cats seem comfortable with each other’s scent, it’s time to move on to the next step – introducing them through a barrier. This can be done by placing a baby gate or screen door between the two cats so that they can see each other but not make physical contact. This helps them get used to each other’s presence without feeling threatened.

Step 3: Supervised Face-to-Face Interactions

When your cats are comfortable with each other through the barrier, it’s time for supervised face-to-face interactions. Keep these interactions short and sweet, with plenty of treats and positive reinforcement for good behavior. It’s essential to keep a close eye on them during these interactions and intervene immediately if either cat shows signs of aggression or fear. Remember, it’s all about creating a positive experience for both of your cats.

Step 4: Gradually Increase Time Together

As your cats become more comfortable with each other, you can gradually increase their time together without supervision. However, it’s important always to keep an eye on them and intervene if necessary. Gradual exposure is key here – don’t rush it.

Positive Reinforcement

While traditional methods focus on punishing bad behavior, positive reinforcement emphasizes rewarding good behavior instead. This approach creates a positive association between your cat and the new kitten, making the transition smoother for everyone involved.

To start using positive reinforcement, begin by rewarding your cat for showing calm behavior around the new kitten. If your cat is sitting quietly near the kitten, reward them with a treat or toy. This will reinforce the idea that being calm around the kitten is a desirable behavior.

In addition to this, create positive experiences for your cat and the new kitten by playing with them together or feeding them at the same time. These shared experiences help build trust and strengthen the bond between your pets.

It’s important to keep in mind that positive reinforcement requires patience and consistency. While you may not see immediate results, with time and effort, you can help your cat adjust to the new kitten in a positive way.

Supervised Interactions

It’s essential to take things slow and help your feline friends get along with each other. One way to do this is through supervised interactions.

Supervised interactions involve setting up controlled situations where the two cats can interact and get used to each other’s presence. This helps them observe each other’s behavior and body language without physically interacting. Using a baby gate or screen door to separate the two cats while still allowing them to see each other is an excellent way to start.

During these supervised interactions, positive reinforcement is key. Providing treats, praise, and playtime with toys can help encourage good behavior between the cats. Avoid punishing or scolding either cat, as it can create negative associations with the other cat’s presence.

It’s important to be patient with the process and understand that it may take several weeks or even months for cats to fully accept each other’s presence. If you notice any signs of aggression or tension during these supervised interactions, such as hissing or growling, separate the cats again and try again at a later time.

Consulting a Veterinarian or Animal Behaviorist

If you’ve recently introduced a new kitten to your resident cat, you may be experiencing some hissing and aggression between the two. Don’t panic. This situation can be resolved with the help of a veterinarian or animal behaviorist.

A veterinarian can examine your cats to make sure that there aren’t any underlying medical issues contributing to the aggressive behavior. They can also provide advice on proper care, such as nutrition, exercise, and environmental enrichment. These factors play a significant role in your cats’ well-being and behavior.

An animal behaviorist specializes in understanding animal behavior and can offer specific solutions to modify your cats’ behavior. They may suggest gradual introductions, scent swapping, creating separate spaces for each cat, and positive reinforcement training techniques. By following their guidance, you can promote a peaceful coexistence between your cats.

It’s important to choose a qualified professional with experience working with cats and their behavior. You can ask for recommendations from friends or your veterinarian, or search for certified animal behaviorists through organizations like the International Association of Animal Behavior Consultants.

Patience and Vigilance

While it can be an exciting time, introducing a new cat to your resident cat requires patience and vigilance. Your cats may need some time to adjust to each other, and as a pet owner, it’s essential to help them transition smoothly and create a harmonious home environment.

Firstly, take things slow and be patient. Cats are territorial animals, and introducing a new feline friend can be overwhelming for your resident cat. Keeping the new kitten in a separate room for a few days or weeks allows your resident cat to get accustomed to the new scent and sounds without feeling threatened. Remember, rushing the introduction process might cause more harm than good, leading to increased aggression and stress for both cats.

Secondly, remain vigilant during the introduction process. Keep a close eye on their interactions, and intervene immediately if either cat shows signs of aggression such as hissing, growling, or swatting. Separating them before things escalate can prevent any harm or stress to both cats.

Lastly, reward good behavior from both cats with treats or affection. Positive reinforcement creates positive associations between them and encourages them to interact peacefully. This positive approach will help create a loving and harmonious home environment.


To sum up, introducing a new kitten to your resident cat can be a daunting task. It’s natural for cats to hiss and show aggression when they feel threatened or uncomfortable. However, with patience, vigilance, and the right tools and techniques, you can create a peaceful home for both cats.

Establishing territory is crucial in promoting a harmonious environment. Separate rooms for each cat with their own resources such as food bowls, litter boxes, toys, and high perches can prevent territorial disputes.

Gradually introducing the cats to each other through scent swapping, supervised interactions, and positive reinforcement training techniques can help build trust between them. During these interactions, it’s essential to remain vigilant and intervene immediately if either cat shows signs of aggression.

If you’re still facing challenges despite following these steps, seek help from a veterinarian or animal behaviorist. They can provide additional guidance on how to manage the situation and ensure the safety of both cats.

Remember that patience is key when introducing a new kitten to your resident cat. Take things slow and reward good behavior from both cats with treats or affection to foster a loving relationship between them.