Drawn from extensive research, on-the-ground reporting and personal experience, Heal explores the fascinating role dogs are playing in the search for a cure for cancer. Heal introduces readers to the field of comparative oncology by describing several research projects aimed at finding new therapies for cancers that are similar in dogs and people. Weintraub also writes about the emerging science behind the remarkable ability of dogs to sniff out early-stage cancer, and the efforts underway to translate that talent into diagnostic devices for early detection of cancer.