Introducing new adult cat

[AyDeeAitchDee]

Morning.

Looks as if we're adopting a 2 year old male soon.

We already have a 10 year old boy (lost our other 14 year old a few months ago, so he's been used to being with another cat, although they weren't particularly close)

Would love to hear how anyone with similar introductions has got on please.

The shelter is recommending this boy as he's shown to be non aggressive and interested in the other cats at the shelter. X

We did a similar thing and it look at least 6 weeks before they would stop kicking off with each other.
We’d originally had 3 cats and 2 died very quickly leaving the 1 on her own so we wanted her to have friend .
They will need their own space for a while, so access to litter tray , feeding separate but so they can see each other.
After about about a week we thought we had made a mistake but taking her back wasn’t an option and here we are months later they get on great mainly and play together, sometimes eat close together sometimes they want space.
Unless they get into a proper fight let them sort it out between them and give it time won’t happen overnight but odds on they will be friends in the end.

I plonked Cheddar down in her carrier in the hall. Magic cane to sniff at her and that was that. I saw magic visibly relax when she met cheddar. I don't think she liked being an only cat. They get on fine. They aren't best friends but magic is very protective of Cheddar. And there's been no fighting. However they are both exceptionally chilled out cats.

I keep the new cat isolated in a separate room at first, so existing cat can get used to his scent in the house. I use a Feliway plug in to calm them. Once new cat has been in the house for a few days, it's then a case of gradual face to face introductions - let them see each other for a few minutes at first and build it up. Separate at first signs of aggression. Don't leave them alone together when you go out until you're 100% confident (you will know when the time is right).