From CBS News today: Rescue dogs that were saved are now being trained to save other people's lives by sniffing out ovarian cancer. Dina Zaphiris, a pet owner and dog trainer from West Hills, Calif., is working with researchers at the Pine Street Foundation to teach dogs how to detect ovarian cancer from a person's breath. "These dogs would rather find the cancer sample than a steak," Zaphiris told CBS station KCBS in Los Angeles . Zaphiris felt a personal connection to the project after her mother was diagnosed with breast cancer in 1990. Eventually, her mother died in 2010. "Her struggle: She did not find it early," she explained. Now, Zaphiris works four hours a day, four days a week training mixed-breed dogs how to use their noses to find cancer. First, healthy people and ovarian cancer patients are instructed to breath into sample jars that contain a piece of cloth. The samples are slotted into a specially made trough. Then, the dogs a