If you are thinking about having your dog bred it is generally decided between the sire's owner and the bi***h's owner's dog. It is generally pick of the litter or $(money). Make sure you know what you are doing before you do breed your dog as there is a lot involved such as the attachment you get with the pups, a big responsibility as they become like your kids and the vet bills especially if the vet has to take the pups out at delivery. Talk to a well known breeder. Make sure you can be at home when your dog delivers the pups because unfortunately your dog could eat one of the pups and get deathly ill. Make sure that you have good homes. It is also good to have a written contract and that is if they cannot keep the dog they must return it to you or at least you know well where the pup is going to.
Maybe if you want to get your pup spayed or neutered talk to another vet because once your pup comes in heat any dog large or small will try to get at your dog and if your dog is small a big dog can kill yours especially being small. Plus if you get them spayed or neutered you are taking less of a chance on them getting breast cancer and other conditions.
There are a lot of back-yard breeders that do not know anything but think they know everything. Please be careful who you talk to.
We are thinking of having our Irish Wolfhound bred and the sperm is at the bank from a good breeders Irish Wolfhound and I know they will go to good homes or else We would have to keep them. Her litter had 11 pups so I feel that she will have a large litter, that is the reason I might not breed her because I do not want my dog hurt by having a big litter but you never know!
If you do not know much about breeding then I recommend that you don't!
Is your dog registered with A.K.C? Is it a mix breed? Sorry this is so long! .
Good Luck!