This is one of InSitu's most fastidious cancer detection dogs, Katy. She always works like this... driven, non-distracted, serious and motivated-- all qualities of a great cancer detection dog. Katy has detected breast, lung, ovarian, brain, in situ ductal carcinoma, melanoma, bone, and almost all types of cancer. She was only trained on ovarian cancer, and was able to detect on all other types of cancer with no further training. This suggests that there is a common odor among different types of cancer. More data needs to be collected on this subject, but we have strong evidence that there is a common odor to different types of cancer.