
These are not generally responsible breeders, as the chances of rehoming being needed for one or both of the pups is higher when there are two, but that kind of breeder doesn''t take back pups, and is more than hapy to get two pups sold in one go.
A good breeder want sto load the dio e as far as is humanly possible for the pups to end up in a god lifelong home. For this reason many will restrict the kind of people that can have pups.
For example it is possible to work and own a dog, but most people haven't got or don't realise the long term commitment this will entail to put the dog first when they are not at work, early morning walks, daycare for the pup, restricted social life etc. Not to mention neighbour problems if the puppy sufers from seperation anxiety.
People with small children may be under pressure and when something has to give it is going to be the dog not the child.
Two pups or dogs too close in age ans again more work strain and stress, not to mention destruction to the home and yep the dog is the one to get moved on.
Inexpereinced owners with large gurading breeds, get it wrong in their upbringing and the only choice may be euthanasia for the dog, not what the breeder who loves their dogs would want.
It is in the breeders own best interest that as far as is possible the first home is the last home.
It is no joke taking back, rehabilitationg, and then trying to find a new expereinced home for a returned dog that will inevitably have some issues. Not to mention that it may not fit into your own canine family. You may like me not have segreagation facilities, so a dog that doesn't get on well with others, or a male when you have in season bitches will mean finding somewhere to boarde the dog.