According to Japanese researchers, “a specially trained Labrador proved nearly as good at identifying those with cancer as a conventional colonoscopy examination.” Furthermore, dogs can be trained to sniff out bowel cancer even in the early stages of the disease. In a series of experiments, a specially trained Labrador sniffed either the breath or stool samples of patients and detected cancer as well as traditional colonoscopy.
In other experiments, trained dogs have been used to sniff cancers of the skin, lungs, bladder and ovaries. According to an article in Guardian, “In later tests, the dog correctly identified 33 of 36 people with bowel cancer after sniffing their breath, and 37 of 38 cancer cases after sniffing a stool obtained from the patient.”
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