Before you start dog breeding as a business or past time, you should first know about its fundamentals.
When you decide to do something, you should set your goals. This is also true with dog breeding. First on the list is good temperament; the dogs you breed should have good temperament so that future owners will not hesitate to care for them. As a breeder, it is your responsibility to lookout for unexpected changes in the behavior of the dogs like shyness, fear, excessive activities, and negative response to leave their common environment. Such characteristics are easily passed to their puppies. Genetics is a very important factor when breeding dogs and you should ensure that good temperament is passed on to the puppies. Try to check if the ancestral genes of the dogs possess good temperament.
Many breeders tend to put a male and a female dog in a certain room in the hope that the dogs will mate eventually. This is wrong. You must be certain that the female dog is already sexually matured so that she can be impregnated. The heat period will often start from the 6-month to one year. Still, this is not the perfect time for breeding. You need to wait until the female dog reaches two years or so because this is the best time for the female to carry a pup.