Thanks.

That's a good idea. I remember when we got our cat Sora and he was only about 6 weeks old (we didn't know any better, our friends said it was okay to take him). We kept him in a cat carrier for the first few days so our other cat could come up and sniff him when she wanted to. It only took about a week until they were curled up together on the couch.
I've been going over to Iris every couple of minutes to talk to her. I just lay on the floor and look at her and talk softly, until she growls, then I back away.
The other animals in my house are stacking on top of each other near my door trying to get in.

It's funny because they don't all usually get along, but now they're so curious that they don't care who's touching them.

Well, they do get along, but only with certain other animals. It's kinda like this in my house: Sora (cat) loves all the cats. Kairi (cat) loves Sora and Oliver (dog). H-Storm (cat) loves all the cats and Tiffera (dog, obviously). Yuffie (cat) loves H-storm (cat, her brother) and Sora. Tiffera loves all the animals, whether they love her or not. Oliver could care less.
Phew. Well that's kinda confusing... but you get what I mean... Lol.