About 6/7 months old, I think you're supposed to wait until a kitten is 6 months old before getting it fixed.
She only escaped out of the house about a month ago, gone for 2 or 3 days before she came back.
Lately I've noticed that she is getting well fat and her teats are swollen.
bugger.
last thing i need is a dozen kittens
MrsKW is ecstatic.