I completely agree with Doc E. We have always tried to convince our puppy buyers to wait til their puppy is at least 1 year old before s/n. Sometimes that's hard when their vet is telling them s/n now, s/n now. Most vets really like that early s/n.

We do make a point to let the people with the females know what to expect and the precautions they have to take when their girl goes into season. If they have never seen it before, most can't believe how their sweet, innocent little girl can turn into a shameless hussey overnight!