
I tend to tell people once I have more than 3 - 4 for each sex if a litter is fairly imminent.
If some way off, then I will take suitable enquiries on the basis I will write to everyone once bitch comes in season to see who is still with me.
If I still have a large number over 3 - 4 per sex I will advise them of this, and say I will pass them onto other breeders planning later than me or they can wait and see.
Once bitch mated I recheck, and confirm state of play.
Once bitch confirmed in whelp (or not) I email again, and see if any dropped out.
If not pregnant, pass on to next breeder, be that someone with excess pups, or someone planning.
When pups born I will sort out who I can allocate a pup to. If I have insufficient of one sex, but more of other, I will see if the unlucky ones will be happy with opposite sex.
If I still have pups left (single or very sex biased litter). I will advise on my website and our Club Secretary that keeps a list of planned/available litters.
It is highly likely that I may get referalls from other breeders whose litter was oversubscribed.
I will ask those I have offered a puppy to send me a 10% deposit, (only refundable if I can't supply the puppy for unforseen reasons), so that we all know where we are, and I don't end up with unlucky people hoping for a cancellation, and can pass them onto another breeders list.
My breed is numerically small, and both litters and suitable homes are 'Feast or Famine' and always breed with the knowledge that all pups may not be homed by 8 - 10 weeks, but when suitable homes become available.
I like to have all on my list vetted from the outset, they will either be existing owners known to me or those I can rely on, or first timers I have met who have researched the breed well.
I like to use the waiting time for relationship building.