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Dogs Can Detect the Changes Your Body Produces When It’s Sick

Could you possibly succeed where humans have failed?
Could you possibly succeed where humans have failed? Photo: Kelly Barnes (Getty Images)

Dogs have 50 times as many smell receptors as humans do, and they have a proven ability to detect drugs, explosives, and diseases. This last bit is especially important. The Washington Post reports that dogs have already been able to detect cancer, shifts in blood sugar, and parasitic infections like malaria.

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