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What is the best way to introduce a new cat to my home?
George
Answered by:
Introducing a new cat to an established household is, in George's considered opinion, a matter of extraordinary delicacy that most humans approach with the casual confidence of someone who has absolutely no idea what they are dealing with.
I want to begin by saying that I understand why they do it. They see a cat. They think: we have a house, there is room, this will be fine. This is the same logic that leads to the bagged chicken. Fine is not a strategy. Fine is what you say when you have not thought it through.
The territory question is the first question. It is also the second and third question. A home is not just a building - it is a map. Every room has a status. Every chair has a history. The spot by the radiator in the back bedroom is not just warm, it is specifically warm, and it is specifically mine, and the arrival of a stranger into that arrangement is not a small thing. It is a renegotiation of the entire map.
What they should do - and very rarely do - is allow the new arrival their own room first. One room. Door closed. Let the existing household continue as normal on the other side. What this does is allow both parties to register the other's presence through smell, through sound, through the gap under the door, without the requirement of immediate eye contact. Eye contact too soon is a declaration. Nobody wants a declaration on day one.
The next stage is the door slightly open. Then a shared space with supervision. Then - and only then - the gradual, careful, mutually agreed expansion of territory. This takes days. Sometimes weeks. Rushing it because you want everyone to be friends is the single most common mistake and I say that with feeling.
I have never had to go through this myself, as Mack and I arrived together which was its own adjustment and one I consider myself to have handled with considerable grace. But I have watched it happen at number 34 and I have observed the consequences of doing it wrong and they are not trivial.
Mack - Sheffield
He's right. Give them a room. Don't rush it. That's it.
I'd add: don't make a fuss. The more you hover, the more unsettled everyone gets. Put the food down, leave the room, let them get on with it.
A Vet Would Say:
Introducing a new cat requires patience - most problems occur when the process is rushed and cats are forced into contact before they are ready.
Keep the new cat in a single room for the first week with their own food, water, litter tray, and bedding. This allows them to settle without being overwhelmed and begins scent exchange passively through the door.
Swap bedding between the resident cat and the new arrival before any visual contact. Scent familiarity significantly reduces the likelihood of aggression when they eventually meet.
Use a baby gate or slightly open door for the first visual introductions - cats should be able to see each other without direct access. Feed both cats near the barrier so they associate the other's presence with something positive.
Never force interaction. Allow the cats to set the pace. Hissing and swatting during early introductions is normal and does not mean the relationship will not work - it means the process needs more time.
The full introduction process typically takes two to four weeks for adult cats. Kittens generally adapt faster. Senior cats or cats with anxiety may need longer. A vet behaviourist can advise if integration is not progressing after six to eight weeks.
If aggression persists beyond the first few weeks of full introduction - sustained hissing, blocked access to food or litter, or physical fights - speak to your vet. What looks like a personality clash is manageable in most cases. If either cat shows signs of stress - hiding continuously, not eating, over-grooming, or persistent aggression - agin, consult your vet.