I have massive cat experience so here's my feelings:
- Females are less likely to spray but there are no absolute guarantees a boy will and a girl won't.
- I am very partial to older cats because you know exactly what you're getting. I raised my boy, Tangee from a tiny kitten and he has grown into a monster who terrorizes my house. He has his cute moments but, oh my God... If I'd had a crystal ball I would never have brought that Satan on Four Legs into my house (spraying, fights...
). Pick a loving full-grown pussycat from the shelter and the love just keeps growing. Kittens are only kittens for about 5 minutes but yet everyone goes for them because of the cute baby factor. This means older kitties have a 50/50 shot at being euthanized, for no other reason than that they aren't babies anymore. Somehow, older cats know you've rescued them from a possible/probable death sentence when you pick them and they never tire of letting you know their gratefulness. The love of an older cat is really like nothing else in the world.
- Always pick your pet based on personality, first. Even the ugliest sweetheart becomes beautiful when you get to know her/him.
- Cats are like snowflakes: no two are alike. I know lots of people who have 2 or 3 cats and their cats all love each other. I have my 5 and a separate kitty (whom I'll soon integrate into the household), the last remaining of 3 Kitchen Cats for whom I've cared. The Kitchen Cats played together, slept together, and adored each other. Contrast that with my 5, none of whom can be within a few feet of one another without hissing and spitting... If you decide on just one, you're golden. If you decide on 2, try to get two that are already a pair, who know each other and have come to rely on one another and who already get along great.
- Pets are expensive. One strictly indoor cat won't usually break your bank but once you get more than two or if any go outside, forget it.... Outdoor cats have to be vaccinated for all manner of diseases and if any one cat goes out, all have to have pricey monthly flea treatments and ridiculously expensive vaccinations. Then there's neutering... which all animals should have, in the event any get outside. Whatever you get, keep he/she/them inside if you can. Your pocketbook will be happier, as will the neighborhood bird population.
Good luck
.