Just to add to the debate, my last dog Lily was spayed at 7 months because she had vaginitis and we had no problems at all, and now Carla has just been spayed 3 months after her first season - stitches out tomorrow - and she has done sooo well, so personally I think its a matter of whats right for yours and your girls circumstances. Some vets do say to have a first season so that the dog is mature and the chances of incontinence is supposedly slimmer. I wished I'd have had Carla done sooner (with hindsight) as she was terrible before her season and during it. Best wishes whatever you decide when you have your little one, love Heather xxx