This video tells a story of a dog who detected cancer in his owner after a scan and mammogram failed to pick it up.
A dog can detect the smell of a drop of blood in an Olympic size swimming pool. That is how sensitive dogs are to smell. Humans can smell cancer through their own breath in later stages, so it makes sense that dogs can smell cancer in humans at stage zero. Stage zero cancer detection is an astonishing miracle, and to date, has only been accomplished by canine.
The stories started about 25 years ago when a woman who owned a border collie mix, had mole on her leg. The dog started to fixate on the mole. It escalated in the following weeks from the dog licking the mole to the dog actually biting at it, as if to remove it. The woman became concerned and finally went to see a doctor to discover the mole had turned into malignant melanoma. Many other similar stories have been reported since; stories of dogs alerting their owners of all sorts of medical problems from minor diseases to every type of cancer.
In cases where dogs were involved in alerting their owners of cancer, it is usually detected early enough to be treatable. The sooner the diagnosis, the greater the chance for a positive outcome.
