Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

How to Introduce a Kitten to a Cat: 10 Vet-Approved Tips

Share

cat-smelling-kitten

Bringing home a new kitten is an exciting time for any cat owner, but if you already have a cat, you’ll need to think carefully about how to introduce them to their new furry friend. You can follow our vet-approved tips to ensure the initial meetings go smoothly. Before you know it, your cat and kitten will happily spend time in each other’s company. They may even become the best of friends!

divider single cat paw oct 2024

The 10 Tips for How to Introduce a Kitten to a Cat

1. Create a safe space for your new kitten

kitten is playing with a ball
Image By: Chendongshan, Shutterstock

Before you even bring your new kitten home, make sure you have a dedicated space for them in your house. It needs to be a quiet room that your adult cat doesn’t have access to. Choose somewhere your cat doesn’t spend much time, like a spare room. Your kitten needs to have somewhere to feel safe to sleep and get used to their new home without being overwhelmed.

Make sure your kitten’s new zone has everything that they need to stay comfortable. You’ll need to include:
  • Cat bed
  • Food and water bowls
  • Litter box
  • Toys
  • Scratching posts

2. Take your kitten for a vet check

Next is booking a health check with your vet. Don’t start introductions between your cat and kitten until you’ve been given the all-clear from the vet. They may want to vaccinate your kitten or treat them for parasites and fleas before allowing them to mix with your cat.

Also, ask your vet about the appropriate time to spay or neuter your kitten.


3. Start with scent

maine coon kitten
Image By: Pixabay

Cats can be territorial, so it will take your existing cat time to get used to sharing their territory with another cat. The best way to start this process is before allowing your cat to meet the new kitten eye-to-eye. Cats communicate using scent markers, so the first step in introducing your cat and kitten is to allow them to get used to each other’s scent.

After your kitten has been home a few days and has had all their health checks, place a fleece blanket, cat bed, or another soft item in their room. Do the same with your cat. This item will become saturated with the scent of each cat. After a few days, swap the items between the cat and the kitten. All you need to do is place it in the room and allow your cat or kitten to investigate it in their own time. Don’t be tempted to put the item in their bed and expect them to want to sleep in it, as first, they need to become familiar with the scent of each other.

If either cat has an extreme reaction to the item, like hissing, keep repeating this process and swapping the items between rooms until your cat and kitten are less reactive. You can also use pheromone diffusers to help your cat and kitten feel less anxious.


4. Allow the cat and kitten to see each other

a kitten in a cage
Image Credit: Naratiwat Pochoom, Shutterstock

Once your cat and kitten are used to each other’s scent, it’s time for their first face-to-face meeting! It’s best to keep it short and sweet. You could install a plastic screen in a door frame so they can see each other but not interact.

The goal is to let each cat observe each other briefly. Depending on their personalities, they may be instantly curious or fearful. Watch both cat’s reactions closely, and don’t move to the next stage until they seem comfortable seeing each other.


5. Do short meetings

cat and kitten with a pot of cat grass
Image by: Irina Kozorog, Shutterstock

Once your cat and kitten get used to seeing each other, it’s time to allow a closer face-to-face meeting. Again, keep the first meetings short, and watch the cat and kitten for any signs of stress or aggression. Older cats can take longer to come around to the idea of accepting a new kitten into their home, and this stage may take time.


6. Feed your cat and kitten together

cat and kitten eating in one plate
Image Credit: Irina Kozorog, Shutterstock

As your cat and kitten get used to spending short time together, you can start feeding them in the same room. This is an excellent way to get them used to spending time together doing something pleasurable.

Place the food bowls somewhere that your cat and kitten can see each other but not so close that one cat or kitten is tempted to eat the food from the other bowl! Keep these short meetings supervised, and allow your cat and kitten to return to their own spaces once they’ve finished their food. If they want to interact at this point, that’s great! Just ensure you stay with them as they get to know each other.


7. Watch for signs of stress

cat staring at the new kitten walking towards her
Image Credit: christopher babcock, Shutterstock

As your cat and kitten get used to spending more time together, keep an eye on their behavior. Warning signs that you need to go back a few steps include:

  • Urination in inappropriate places
  • Excessive vocalization
  • Aggression
  • Abnormal grooming

If you’re concerned, speak to your vet and ask them if there’s anything else that you can do to reduce the stress or anxiety in either or both cats. You may find that your cat and kitten will start to try to work out where the boundaries between them are. They may play fight, pounce on each other, or compete for their toys.

Watch that none of these interactions escalate into violence. Hissing and puffing up their fur indicates that your cats are not feeling comfortable with each other’s presence, so at that point, end the interaction, and allow them both to return to their own safe spaces before trying again later.


8. Offer plenty of treats

Two cats being fed cat food from a tin can
Image Credit: Vershinin89, Shutterstock

Treats almost always help! Make sure you have enough for both cats. When you see them interacting nicely with each other, offer a treat to help reinforce this positive behavior. If you’ve already been training your older cat using positive reinforcement methods, doing the same with your kitten is a great idea.


9. Maintain a routine

Cat groming a kitten in the garden
Image Credit: Peter Iulian, Shutterstock

A routine can help your cat and kitten feel more confident and secure in their daily life. Try to schedule things like meal times, and stick to a routine with meetings between your cat and kitten. They’ll both need time to relax on their own after meetings, so make sure you give them plenty of time to do so. Keeping to a routine can also help minimize stress.


10. Stay patient!

cat and kitten playing outdoors
Image By: Volodymyr Plysiuk, Shutterstock

Introducing a new kitten to your cat can feel like a big step, and you indeed need to prepare to make it a success. But with a little planning and patience, you can look forward to spending time with both your cat and kitten as they get to know each other.

divider cats oct 2024

Conclusion

Although some cats and kittens only take a short time to become friends, others require several weeks or more to be comfortable around another feline. Introducing a new kitten to an adult cat is a gradual process you can’t rush, and some adults have more problems with a new creature invading their territory. However, if you follow our tips and are patient with the process, your felines will eventually learn to live together.

See Also:


Featured Image Credit: Irina Kozorog, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

When a Cat Becomes a Water Fountain – Why Cats Vomit After Drinking

Seeing a cat drink water and then promptly bring it back up can be confusing. Sometimes the explanation is fairly simple, particularly if...

Chatting About Sleeping Positions, Loafing & Cats in Tubes | Chatty Cattys, Episode 33

In this episode of Catster’s Chatty Cattys podcast, Dr. Karyn and Nicole dive deep into the fascinating world of feline sleep behaviors. From...

The Bite Stuff: The Truth Behind a Cat’s Sudden Nip

A cat bite that seems to come out of nowhere is one of the more confusing things a cat owner deals with. Everything...

Your Cat’s Purr Proves They’re One of a Kind

There are few sounds more comforting to a cat parent than the familiar rumble of a purring cat. You probably know your own...

More related

Alternatives to Declawing Your Cat: 8 Humane Options

On paper, declawing your cat might seem like a simple way to stop your furniture from being ripped to shreds, but the reality...

10 Best Vacuums for Cat Hair in 2026 – Reviews & Top Picks

Cat hair is a part of owning a kitty. While the amount of shedding varies, dealing with hair everywhere is still vexing. A...

11 Cute Cat Commercials You’ll Love to Watch (With Videos)

In today’s fast-paced world, where our attention is constantly on various screens and devices, it’s refreshing to stumble upon something that instantly captivates...

Rescue Cat Behavior: Vet-Reviewed Problems & How to Help

Rescue cats often make wonderful pets, but while many quickly adapt to their new environment, some may exhibit certain behavioral challenges. Understanding and...

Keep reading

Is My Cat Drinking Enough Water? Vet-Approved Facts & Tips

Ensuring your cat is hydrated is incredibly important for its overall well-being. Cats need to intake around 1–2 milliliters of water per kilogram of weight every hour, which for a 10-pound cat means an average of one cup of water...

cat drinking from cat water fountain

Is Rhaphidophora Tetrasperma Toxic to Cats? Precautions & Risks

The Rhaphidophora tetrasperma, also referred to as the mini monstera, is a beautifully lush plant with small, split leaves that can range in color from bright green to dark yellow. These plants have climbing vines that will grow several feet...

Why Is My Cat So Affectionate in the Morning? Vet-Verified Facts & FAQ

It isn’t odd to hear about cats trying to keep their owner in bed later for extra cuddles. Even cats that aren’t typically affectionate may want to cuddle in the morning. This often raises the question as to why cats...

cat curling on bed

Why Do Cats Invade Your Personal Space? 4 Vet-Reviewed Reasons

After thousands of years of domestication, it’s surprising that cats still haven’t adopted any social mores that direct their human owners. They’ll knock plants over without a second thought, scratch up furniture and rugs, or pee on the carpet if...

cat-rubbing-against-owner

8 Best High Protein Cat Foods (2026) – Reviews & Top Picks

We all want the absolute best for our feline friends. Many of us are looking to switch to a high-protein cat food in order to meet our cat’s natural dietary need for an above-average percentage of protein. Unfortunately, plenty of...

red cat eating from stainless bowl

Why Is My Cat Biting Her Kittens? Vet-Approved Reasons & FAQ

People with a cat that has had kittens for the first time may find themselves confused by some of the behavior mama cat displays after her babies are born. While watching a cat discover their maternal instincts is often adorable,...

cat carrying its kitten_ightcube, Shutterstock

Is Tea Tree Oil Poisonous to Cats? Vet Reviewed Risks & FAQ

Tea tree oil is often used for its antibacterial and antimicrobial properties but it should never be used on cats. Holistic health practitioners often use a blend of traditional medical therapies as well as food, essential oils, teas, and aromatherapy...

tea tree essential oil

5 Amazing DIY Cat Diapers You Can Create at Home (With Pictures)

If you are a cat lover, then you know that sometimes they have accidents. When this happens, it is important to have a plan in place to deal with the mess. One option is to use cat diapers. Cat diapers...

cat wearing diaper

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.