Dogs good at detecting cancer

Dogs have a 98% reliability rate in sniffing out prostate cancer, according to US research.

The study involved two German shepherds sniffing the urine of 900 men - 360 with prostate cancer and 540 without.

Scientists report one dog one got it right in 98.7% of cases and the other in 97.6%.

They say the dogs are able to detect prostate cancer's specific volatile organic compounds in the urine.

It is believed the dogs can pick up a scent

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