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For centuries, dogs have been used to track scents. You’ve likely seen Lassie or witnessed police dogs or hunting dogs track a scent. Well, doctors at the University of Pennsylvania are now experimenting with new uses for a dog’s sensitive sense of smell—and exactly why might surprise you.
To a human nose, cancer has no scent. The thought that cancer patients smell a certain way may seem absolutely absurd. But that could be the case for dogs; with their acute sense of smell, it’s possible that dogs can identify tissue that has the potential to kill.
McBaine, one of four dogs trained to identify the scent of cancerous tissue at the Penn Vet Working Dog Center (part of the University of Pennsylvania’s School of Veterinary Medicine) is a springer spaniel.