See How Dogs Can Detect Cancer Better Than Lab Tests

A dog named Lucy is able to effectively sniff out bladder, kidney, and prostate cancer with more than 95 percent accuracy. According to CNN, she is one of eight dogs currently being used in a new clinical trial by Medical Detection Dogs to sniff out cancer in 3,000 patients in Britain.

Since dogs have such a powerful sense of smell -- they have 300 million sensors in their noses compared to humans' 5 million -- they have been instramental in new developments in cancer screening

See Lucy's incredible skill: 

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