Do You Smell a Rat … Or Should the Rat Smell You?

African giant pouched rat

Some animals, such as this African giant pouched rat, are being used to sniff out disease in humans. (Photo credit: Penny Boyd/Alamy Stock Photo)

In 1989, a paper appearing in the British medical journal The Lancet made an astounding claim. Two dermatologists reported how a patient decided to come in for an exam because her dog kept sniffing a mole on her leg. The dog even tried to bite it off at one point. Tests proved it was a malignant melanoma nearly two millimeters thick. When removed, the woman survived, and the study would eventually become known as the ‘First Lancet Letter’ or the first time in a peer-reviewed medical journal that an animal’s senses had been linked to the detection of disease. [Read more…]