Female dogs aren't neutered nor do they have periods. Unspayed females will go into heat, which is a period of ovulation, however, once spayed this is not possible.
You can get your female dog spayed as early as 6 months of age. It is a good idea to get her spayed before her first heat as the occurrence of breast cancer later on is greatly reduced to almost 0....
You can mate female dogs at any age. You should wait till your dogs 3rd heat cycle. If you breed them on their first heat, they usually are fully sexually mature, and it can be very dangerous for the...