[Rhetts_mama]

At 7 months she's far too young to breed. Most good breeders recommend waiting until she's closer to 2, so you've got plenty of time to research.

Start by finding yourself a good mentor who can help you determine whether or not your girl is even breed worthy. Not all yorkies should be bred simply because they can be. You will need expert help in determining whether or not she's a good example of her breed. Showing, or working with a show breeder as your mentor, will help you find out.

Once you've determined that, then it's time to move on to determining if she's healthy enough to breed. Yorkies have a myriad of health problems inherent to the breed. You will need to know not only her history, but the health histories of the dam, sire, granddam, grandsire and any pups they had. There are many genetic diseases that should exclude future breeding of the lines. Then there is the state of her knees, hips and everything else that plagues yorkies.

Now, do it all again in finding the stud. If you were to have an excellent example of a yorkie you could undo it all in a heart beat if the stud isn't the same.

You also need to determine if you can handle the financial responsibility of breeding. In addition to all the testing mentioned here and in other posts (including tests for STD's) you will also have to be prepared for vet costs associated with a possible c-section or post delivery complications (eclampsia, infections, etc). The list of whelping supplies you will need is long and not exactly cheap.

Puppy care isn't cheap either. There are vaccines you will be responsible for, dewclaws, tail docking (if you choose to go that route).

All in all, you will find a lot of information on line, but nothing will take the place of a strong, experienced mentor who is there with you and a good vet.