We currently have two cats. They are great cats, the one bites sometimes when he gets excited, and he's kind of stupid, but other than that, great cats. Don't spray, they use litter boxes, etc. All three dogs get along with the cats (we trained them well).
A stray cat has adopted us, and we decided we'd try to keep it. So, tonight, we took it in the house and put it on our sun porch. Tomorrow morning it is going to get neutered and tested for FIV/Feline Leukumia. If all is fine with tests, we will keep it inside. If he comes back positive for either of those, we will either turn him back outside, have him as an outdoor cat at my partner's parents house, or (possibly) have him euthanised if it is Feline Leukemia. Hopefully that shouldn't be the case though, he looks healthy.
He is very sweet and laid back. He let my partner carry him up to the sun porch, he sits on the deck table while the dogs walk on the deck, and right now he's on the sun porch just relaxing, not getting too wound up. I am not sure yet if he has used the litter box. Obviously he came from a home, so I would hope he uses it, but who knows.
How should I introduce him? Right now my two cats are just sniffing through the door while the new cat is in quarantine. After new cat gets back from his surgery, he will have the run of the spare bedroom that is attached to the sun porch for about 48-72 hours. There is a small gap in the door so the cats will be able to paw at each other, sniff each other, see each other, etc. without getting attacked. I am worried he just may be one of those cats that needs to be an only cat"?
After that point, what do I do? I want to do it right. I don't want the cats to hate each other. I opened the door a crack once tonight, and they sniffed at each other and were fine. I did it again and that time new cat tried to scrach one of my cats, I think he moved too fast. THe new cat doesn't seem too upset though, he's just relaxing on the sun porch. My cats are wound up, though.
What should I watch for? What should I do? I'm terrified...I hear all these stories about cats hating eachother. Also, I am afraid of spraying. I hope 3 days is long enough for most of the hormones to leave new cat and cut down on the urge to spray. He has never sprayed on our deck.