Thanks for the replies, everyone. I feel much better. My mom had a male that didn't get spayed soon enough and all I remember about him was that he sprayed everything, even after being fixed. I plan on fixing him as soon as I can. He was found in the woods--people dump mommas and kittens off at my mom's all the time --so we're not sure how old he is, but he and his sister are both eating solid food so I'm guessing eight weeks, but I want to wait a couple more before taking them to the vet just to make sure, and I'll get him fixed when the vet says I can. I'll probably wait to get his sister fixed until six months or so, since that should still be before her first heat.

No names for the tortie yet. I want Gracie because she's the most ungraceful kitty ever, but hubby doesn't like that name too much. We've named the black one Cujo. It seems to fit him somehow.

Thanks again for your replies. It's good to know that we shouldn't have any problems with our new baby!