Whether your current cat is lonely, her companion cat recently passed away, or you simply love cats, it is important to take a few precautions to ensure that your cat-to-cat introductions go well.

Finding a cat: Adult or Kitten?

If you have your heart set on a kitten, wait it out until “kitten season” – shelters are often inundated with homeless kittens in the springtime. But remember, in just a few short months that adorable kitten will look just like an adult. Additionally, keep in mind that by adopting an adult cat, you will be able to assess more about his or her fundamental personality than you will be able to for a kitten, which could improve your chances of success.

Consider your current cat:

Perhaps the most important step in adding another cat to your home is careful consideration of the resident cat’s personality. Features such as looks, size, breed, gender, or any quality other than personality are not factors that should weigh heavily in the decision. Instead, focus primarily on personality matching.

• If you have a very laid-back, elderly or frail kitty at home, it is best to avoid kittens and very playful or rambunctious cats.
• If you have a rambunctious cat that zooms all over the house, getting a very laid-back or quiet, shy cat is probably not wise.
• Try to focus on cats that have personality traits similar to that of your current cat.

The Introduction Process:

By planning ahead and taking things slowly, your chances of success when introducing cats are much greater. If you rush into things and attempt to “force” a relationship, you might inadvertently sabotage a relationship that could have otherwise worked out. Here are six steps that can help you ensure a successful introduction:

Step One: Start by Trading Scents

Once you have selected a potential new cat, ask the shelter if you can take home a blanket that the cat has slept on to give to your resident kitty. Also, ask it if would be possible to bring a blanket from home that your resident kitty has slept on, to give to your new cat. In some cases, this will not be possible – especially with kittens – due to disease concerns. But, if you can exchange the cats’ scents with one another, you will introduce an important identification and communication signal right off the bat.

Step Two: Prepare a Separate Room

Some cats can be dropped into the middle of a new home and adapt just fine, with everything working out between the kitties. However, such an approach can also end in disaster, injuries, or a failed adoption. Before bringing your new cat home, we recommend that you:

• Find a quiet room in your house (a bedroom or bathroom) where you can keep the new cat safely separated from the resident cat for a few days.
• Make sure it is a room where the resident cat has been, that it can be easily accessed by all human family members for social interactions and playtime, and that it is set up with food, water, litter, toys and soft beds.
• Choose a room that has an inch or two of space under the door for feline introductions.

Step Three: Feed them on Opposite Sides of the Door

Place both cats’ dishes close to the door, on their respective sides. If one of the cats refuses to eat, you can feed elsewhere, but still place dishes of tuna or some other tasty snack on either side of the door. By having both cats experience something positive (a meal or a yummy snack) while they are nearby, they can learn to form positive associations with each other.

• Note: If either cat is growling or hissing at the other through the door, do not put them together anytime soon; take things very slowly and continue to feed this way.

Step Four: Exchange Scents around the House

If both cats are eating well, and appear calm and relaxed on their respective sides of the door, then it’s time for the big scent exchange.

• The resident cat should now be confined in the room, while the new cat is allowed to roam the house. Each cat should use the other cat’s (scooped) litter box, food and water dishes, beds and toys, so the only thing not being exchanged is the cats themselves.
  Continue to feed both cats close to their respective sides of the door.
• While the new cat is exploring your home, you may want to close bedroom and bathroom doors at first so the new cat does not feel overwhelmed. Over the course of a few days, open a door or two at a time and increase the amount of space the new cat has access to.
• If either cat appears stressed, nervous or fearful, you might want to do the exchange described above multiple times, for example: The new cat spends a few days in the room, then a few in the house, then back in the room – while the resident cat is in the opposite location. This can help ensure lots of scent exchange and desensitization.

Step Five: Let them make Visual Contact

If everything seems to be going well, and everyone is acting, eating and using the litter box normally, you’re doing great! The next step is to open the separating door, but keep a gate of some sort across it so they can see, smell and have contact with each other. The gate should prevent complete access. (A baby gate is perfect, but usually not high enough for cats, so you may need to stack two). Continue feeding cats on their respective sides of the door, and continue switching them.

Step Six: Allow them to Meet

If everything seems fine, and everyone is acting, eating and using the litter box normally, then it’s time to take down the gates.

• There may be some hissing or swatting, but cats often will work things out by themselves.
• If the cats seem to tolerate, ignore, enjoy or interact with each other – that’s great news!

Leaving Cats Alone Together:

It’s a good idea to separate the cats at first when you will not be around to supervise them. You want to ensure that you see all their interactions and know exactly what is going on. After you feel that the cats are getting along, you can ease up on this step. Getting another cat will have a big impact on your resident cat, so considering your decision carefully and introducing them properly is the right thing to do. Good luck!