We finally got our rabbits sexed by the vet to know for sure that they are both female. (I was correct!) Our girls are about 10 weeks and 4 months and the vet said for medical reasons they wouldn't need to be spayed until before 2 years. I always hear 6 months, is that correct? She did say if we wanted to bring the older one in for a spay in a couple months we could, she doesn't even weigh 2 lbs now, so she said she preferred to wait.