Billy Junior had her first trip to the vet when she was about 14 weeks old. The vet was not able to determine her gender at that time. She even said that there was a chance that Billy Junior was neither male nor female (I forget the medical term for that).

A few weeks later, we were back at the vet's again. She still couldn't tell for sure whether Billy Junior was male or female (but she was leaning toward female).

A few weeks after that, Billy Junior was spayed (so I sure hope she is a female!).