Can a dog get pregnant if they are on there period?

A female dog usually goes into heat about every 6 months. If you are wondering if she should get pregnant on her second heat cycle, or "period," that means she might be around 1 year old. It is recommended that a female dog reach the age of 2 years before she becomes pregnant. That gives her time to mature. At age one, they are still like a puppy and need some time to settle down. By the way, I would recommend not breeding at all or getting her spayed after a pregnancy so she will live longer. The more heat cycles they have, the more hormones continue to develop in her body, and the higher the risk for ovarian cancer. I lost my dog this way that I had during childhood. I had my dogs fixed right away. This also keeps the pet population down, and gives animals in the shelters a chance to live! From, the school librarian