Join Date: Aug 2011
Location: Whitehorse, Yukon
Are you the first owner to this dog? Any chance that she was done as a ped spay?
If not, dogs can go into heat anytime between 4 months (which would be SUPER early) and as late as 18 months (which is late, but not unusual). The most frequent time for the first heat is between 9 - 12 months old.
Have you asked the breeder if their lines maybe come into heat a little later?
I would talk to the breeder, see what they say. You can also discuss with your vet, and if it were me I would wait until she was 18 months AS LONG AS she does not have any medical issues come up before then requiring a spay.
Are you planning on spaying her eventually, or is she going to remain intact?