First of all, thank you for rescuing this kitty!
Oh - and welcome to The Cat Site!
I hope you find it as helpful (and fun
) as I did (do!).
NYC is a rough place for strays - but has lots of food sources for them and the fact that they're sharing those food sources with rats and mice. So while I don't have anything new to add to the advice provided by Mary Anne (Hissy - one of our resident feral experts) and Heidi (Valanhb - who's little Ophelia is a rescue, too!) - I would very much like to emphasize the potential problem with parasites.
We have three feral rescues that we brought inside in July. We've been battling round worm through as late as January (keep your fingers crossed - looks like we might have finally gotten everything out of their systems).
Fortunately, round worm is easy to treat. But to make it easier for your Vet, bring a stool sample when you go for your visit.
Just in case, here's an article on Round Worm: Round Worm article at www.peteducation.com
As you can see, it is an easily recurring problem - until all the encysted larvae make their way through the cat's system.
Any other kind of worm is much easier to eliminate.
Also - kitty may have ear mites. This, too, is easily treated with drops for the ears.
And, obviously, fleas are easily treated with a bath, and if kitty is living inside only with you, you only need to give the house a good vaccuum with a flea collar cut up and placed in the vaccuum bag before vaccuuming. (DO NOT PUT A FLEA COLLAR ON THE CAT. Those flea collars can kill your cat, not just the fleas. Your Vet can provide a safe alternative.)
Ticks, unless it is a bad infestation, are also easily treated. It takes time groomy kitty, but place a drop of alcohol on the tick - wait for it to pull its head out, and then pick it off the cat with tweezers and kill it (not with your fingers!) Do not kill the tick with its head still in the cat's skin.
Oh - one last thought. Our vet treats round worm with Drontal. 1 1/2 pills for a cat of 8 pounds or larger, and a repeat in three weeks. We just kept taking stool samples in every few weeks after that, and we kept up the treatments each time round worm reappeared. It's been almost two months now that "we've" been round worm free....
We'd love it if you could keep us posted! We love happy endings - and we're here for support if you need it.