We are looking for a blue or chocolate roan dog for stud in the north east area, initial enquiry only as Milly is only 6 months old, looking to mate toward 12/18 months old. replies to ianandwendyh@aol.com

Which breed?
You will need to complete all necessary health tests dependant on breed before breeding and will need to find out if she is a good example of the breed.
A stud owner will require that your bitch has a pedigree that is complimentary to the dogs and unless all heealth tests are good and she is a good example you will only find sub standard males available to use on her whos owners are only interest in financial gain.
Archer

I have cocker spaniels and wouldn't dream of breeding from them until around their 2nd birthday or closest season to it.  You need to go back to your breeder, get all the relevant health checks done and also make sure there are no breeding restrictions on your girl!

I 'think' you are talking about cockers??