
If I receive an email which simply say I would like a puppy, I reply with an email going something like
"Thank you for your interest.
In order for me to ascertain if this breed and you are likely to be compatible can you let me know more about yourselves, your family make up, previous experience with dogs and the breeds, your working patterns and other interests.
Who will be at home the greater part of the day to care for the dog,a nd if you work/both work what arrangements for the daily care of a puppy have you put in place. Do you have areas where a dog can safely be let off lead away from roads and livestock."
This will usually deter time wasters. If they reply then I will ask more questions depending on their answers, and offer them my telephone number in order to get more information and to get a feel for them.
The more questions will include: Have you met and spent time with the breed before, if you have had a previous dog then I will ask about it to find out what happened to it (this needs to be asked with subtlety, and can show how much commitment they have to dog ownership). If they currently have dog what breed what is their daily dog routine, and how does it behave.
Depending on circumstances I have also asked for references, from a Vet, canine organisation, and personal ones fro a dog owning friend.
If I am happy with them or they are very determined to have the breed I will invite them to meet the dogs. I will tell them that they should prepare to go for a long walk with me and the dogs to see how they are off lead (including how naughty my Jozi can be delaying her recall), how they interact with other canines and people, let them have a go with the dog on lead who will promptly take liberties and haul from side to side so they can sniff and scavenge out the gutter :D.
If I am not happy that they really are suitable but they are still determined I will try to get them to see why dog ownership, or this particular breed are not for them. I try to do this in such a way that they realise I have done them a favour and stopped them making a mistake they would be living with for perhaps 15 years. This will stop them from going elsewhere or to a pet supermarket or pet shop, one hopes.
Those who I am happy can offer a pup a good long term home and are aware of the commitment have a realistic idea of what ownership entails and can supply all a pups needs as I see it will get to go on my waiting list, and if I cannot help them out then will pass them onto a fellow breeder as already vetted.
There are probably other things that I can't think of right now.
I have to admit to a degree of self interest in my vetting. As I take lifelong responsibility for the pups I breed I want to be as sure as I can be that the dog will be a permanent fixture in it's new home. Having back at any time with often no notice a canine delinquent to then rehabilitate and re-home is not something I relish. It may be very inconvenient (I don't have kennels as such to segregate dogs, all dogs have to live together as part of my family), expensive and difficult, and the dog may have bad habits or experiences to sort out.