Hi Karin I don't understand, If the ferret is not in heat how can your vet know she has not been spayed.? If she is in heat, she is old enough to be spayed. If she is not in heat, you should not put a vasectomized hob in with her. All he will do is rape her, which is something she does not need with the stress she is going through now. If she is in heat, he will bring her out, but then her body will think she is going to have kits, after 6 weeks of preparing for her kits she will be left with nothing and still need to be spayed, is it worth it, to put her through all this stress? Regards Stephenie Stichting de Fret Netherlands [Posted in FML 5621]