Dogs being trained to find cancer:

Dogs are currently being trained to find Ovarian and lung cancers in humans breath.
Currently they are 88-100% accurate, More than half of pure bred dogs will die from cancer and are suseptable to the same types of cancer as people . becuase they are exposed to the same day to day activities as people. By studying the dna of dogs scientists are trying to find the links between the genetic causes of cancer in humans and dogs.

Please view the video at : http://www.kqed.org/quest/television/fido-fights-cancer

from: http://www.kqed.org/quest/television/fido-fights-cancer