Some general "rules of thumb" for canine estrus:
The first estrus cycle usually occurs by age 6-12 months; for some small breeds, as early as 5 months, and for some large and giant breeds, the first cycle may not occur until 14 months of age or older.
On average, dogs have two cycles a year.
The estrus cycle lasts on average 12-21 days, but maybe be as short as a few days to four weeks. The estrus period length varies widely between breeds and individual dogs.
The length of a cycle varies widely, even for dogs of the same breed. If in doubt, assume the longer end of the range for the cycle length.
Bleeding occurs prior to a female being receptive to a male (allowing mounting by the male), but male dogs will be very attracted to the female in the proestrus stage.
Dogs can get pregnant during their first heat cycle, but this is not advisable as a 6-month old dog is not yet fully grown/mature, and complications for the mother and the puppies are more likely.
If you are considering spaying the dog that brings up a whole new issue for discussion. If fact I think it's been beat up before somewhere on this forum.
The general recommendation is to spay prior to the first heat cycle. I have 2 female Brittanys and both are spayed. My older Britt was spayed shortly after her first cycle and my younger one was spayed a 7 months, prior to her first heat cycle. I would have spayed my older Britt before her first cycle but didn't get it done in time. I have seen no adverse effects to having them spayed at this age.
I appreciate the response. I would hand the pup back to the breeder for the duration of the process if that were the case, to leave it 'to the pros'... Issue was, our girl was the only pup to survive from her litter, and it was mom's only litter (who probably won't have another). Overall, I'm leaning to just spay her and let things be. I'll poke around a bit more for stats and whatnot. I'm glad to hear you've seen no downside to spaying early. That is comforting. Odds are I'll be scheduling it soon. Just want to hear more sides to the case for waiting through a cycle or two to let full growth complete.I tend to recommend that people have their dogs spayed or neutered and leave the breeding up to the pros. Having a female that is in the house is no fun while she is in heat. And if there are any male dogs close by it's even more of a pain. Like I said in my previous post, I have seen no negative effects of having my females spayed early. But other people may have different thoughts and opinions. I would consult with your vet and see what they recommend. I'm also sure there is a wealth of information on the internet about it. Just make sure the information is coming from a reliable source and backed up with some studies.
In your situation I would highly recommend that you have your female spayed. You can always get another pup from the same breeder with the same genetics.
Good luck!
My older Britt was spayed shortly after her first cycle and my younger one was spayed a 7 months, prior to her first heat cycle. I would have spayed my older Britt before her first cycle but didn't get it done in time. I have seen no adverse effects to having them spayed at this age.