I work in a vets, and I agree 100% with Gilly. DO NOT breed, unless you want to
a)lose money
b) be responsible for any resulting puppies for the rest of their lives
c)pay for all of the VITAL checks neded like Gilly said, before breeding.
Every day at work I see tragedies resulting in ill puppies, and owners wanting recompense- and that's the upside. It's not something to get into unless,like children, you take it on till they are old!